Benchmark: Attribute existence check within NamedNodeMap

HTML Preparation code:

<div id="start">
    <input checked="checked" class="very-hidden" id="cb-expect-ikeys" name="expect.ikeys" type="checkbox" value="True">
    <div class="form-check mx-auto filter-check" hx-post="ml" hx-target="#ml-lander" hx-trigger="click consume" hx-vals='{"base.sort.col": "rank", "base.sort.dir": "a", "filter.sort.str": "", "filter.sort.col": "", "modal.name": "symbol", "duplicated.col": ""}' id="cb-outer-combo-0">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="(Select All)" id="cb-0" name="i" style="pointer-events: none;" type="checkbox" value="0">
        <label class="form-check-label w-10" for="cb-0" id="cb-label-0">
            (Select All)
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-1">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="AAVE" id="cb-1" name="i" type="checkbox" value="1">
        <label class="form-check-label w-10" for="cb-1" id="cb-label-1">
            AAVE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-2">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ADA" id="cb-2" name="i" type="checkbox" value="2">
        <label class="form-check-label w-10" for="cb-2" id="cb-label-2">
            ADA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-3">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ALGO" id="cb-3" name="i" type="checkbox" value="3">
        <label class="form-check-label w-10" for="cb-3" id="cb-label-3">
            ALGO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-4">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="APE" id="cb-4" name="i" type="checkbox" value="4">
        <label class="form-check-label w-10" for="cb-4" id="cb-label-4">
            APE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-5">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="AR" id="cb-5" name="i" type="checkbox" value="5">
        <label class="form-check-label w-10" for="cb-5" id="cb-label-5">
            AR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-6">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ATOM" id="cb-6" name="i" type="checkbox" value="6">
        <label class="form-check-label w-10" for="cb-6" id="cb-label-6">
            ATOM
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-7">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="AVAX" id="cb-7" name="i" type="checkbox" value="7">
        <label class="form-check-label w-10" for="cb-7" id="cb-label-7">
            AVAX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-8">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="AXS" id="cb-8" name="i" type="checkbox" value="8">
        <label class="form-check-label w-10" for="cb-8" id="cb-label-8">
            AXS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-9">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BAT" id="cb-9" name="i" type="checkbox" value="9">
        <label class="form-check-label w-10" for="cb-9" id="cb-label-9">
            BAT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-10">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BCH" id="cb-10" name="i" type="checkbox" value="10">
        <label class="form-check-label w-10" for="cb-10" id="cb-label-10">
            BCH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-11">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BIT" id="cb-11" name="i" type="checkbox" value="11">
        <label class="form-check-label w-10" for="cb-11" id="cb-label-11">
            BIT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-12">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BMAX" id="cb-12" name="i" type="checkbox" value="12">
        <label class="form-check-label w-10" for="cb-12" id="cb-label-12">
            BMAX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-13">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BNB" id="cb-13" name="i" type="checkbox" value="13">
        <label class="form-check-label w-10" for="cb-13" id="cb-label-13">
            BNB
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-14">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BOT" id="cb-14" name="i" type="checkbox" value="14">
        <label class="form-check-label w-10" for="cb-14" id="cb-label-14">
            BOT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-15">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BSV" id="cb-15" name="i" type="checkbox" value="15">
        <label class="form-check-label w-10" for="cb-15" id="cb-label-15">
            BSV
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-16">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BTC" id="cb-16" name="i" type="checkbox" value="16">
        <label class="form-check-label w-10" for="cb-16" id="cb-label-16">
            BTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-17">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BTT" id="cb-17" name="i" type="checkbox" value="17">
        <label class="form-check-label w-10" for="cb-17" id="cb-label-17">
            BTT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-18">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BUSD" id="cb-18" name="i" type="checkbox" value="18">
        <label class="form-check-label w-10" for="cb-18" id="cb-label-18">
            BUSD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-19">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CAKE" id="cb-19" name="i" type="checkbox" value="19">
        <label class="form-check-label w-10" for="cb-19" id="cb-label-19">
            CAKE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-20">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CDAI" id="cb-20" name="i" type="checkbox" value="20">
        <label class="form-check-label w-10" for="cb-20" id="cb-label-20">
            CDAI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-21">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CETH" id="cb-21" name="i" type="checkbox" value="21">
        <label class="form-check-label w-10" for="cb-21" id="cb-label-21">
            CETH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-22">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CHZ" id="cb-22" name="i" type="checkbox" value="22">
        <label class="form-check-label w-10" for="cb-22" id="cb-label-22">
            CHZ
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-23">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CRO" id="cb-23" name="i" type="checkbox" value="23">
        <label class="form-check-label w-10" for="cb-23" id="cb-label-23">
            CRO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-24">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CUSDC" id="cb-24" name="i" type="checkbox" value="24">
        <label class="form-check-label w-10" for="cb-24" id="cb-label-24">
            CUSDC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-25">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CWBTC" id="cb-25" name="i" type="checkbox" value="25">
        <label class="form-check-label w-10" for="cb-25" id="cb-label-25">
            CWBTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-26">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="DAI" id="cb-26" name="i" type="checkbox" value="26">
        <label class="form-check-label w-10" for="cb-26" id="cb-label-26">
            DAI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-27">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="DASH" id="cb-27" name="i" type="checkbox" value="27">
        <label class="form-check-label w-10" for="cb-27" id="cb-label-27">
            DASH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-28">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="DOGE" id="cb-28" name="i" type="checkbox" value="28">
        <label class="form-check-label w-10" for="cb-28" id="cb-label-28">
            DOGE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-29">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="DOT" id="cb-29" name="i" type="checkbox" value="29">
        <label class="form-check-label w-10" for="cb-29" id="cb-label-29">
            DOT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-30">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ECOIN" id="cb-30" name="i" type="checkbox" value="30">
        <label class="form-check-label w-10" for="cb-30" id="cb-label-30">
            ECOIN
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-31">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="EGLD" id="cb-31" name="i" type="checkbox" value="31">
        <label class="form-check-label w-10" for="cb-31" id="cb-label-31">
            EGLD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-32">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ENJ" id="cb-32" name="i" type="checkbox" value="32">
        <label class="form-check-label w-10" for="cb-32" id="cb-label-32">
            ENJ
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-33">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ENS" id="cb-33" name="i" type="checkbox" value="33">
        <label class="form-check-label w-10" for="cb-33" id="cb-label-33">
            ENS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-34">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="EOS" id="cb-34" name="i" type="checkbox" value="34">
        <label class="form-check-label w-10" for="cb-34" id="cb-label-34">
            EOS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-35">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ETC" id="cb-35" name="i" type="checkbox" value="35">
        <label class="form-check-label w-10" for="cb-35" id="cb-label-35">
            ETC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-36">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ETH" id="cb-36" name="i" type="checkbox" value="36">
        <label class="form-check-label w-10" for="cb-36" id="cb-label-36">
            ETH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-37">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ETHW" id="cb-37" name="i" type="checkbox" value="37">
        <label class="form-check-label w-10" for="cb-37" id="cb-label-37">
            ETHW
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-38">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="EVMOS" id="cb-38" name="i" type="checkbox" value="38">
        <label class="form-check-label w-10" for="cb-38" id="cb-label-38">
            EVMOS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-39">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FEI" id="cb-39" name="i" type="checkbox" value="39">
        <label class="form-check-label w-10" for="cb-39" id="cb-label-39">
            FEI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-40">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FIL" id="cb-40" name="i" type="checkbox" value="40">
        <label class="form-check-label w-10" for="cb-40" id="cb-label-40">
            FIL
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-41">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FLOW" id="cb-41" name="i" type="checkbox" value="41">
        <label class="form-check-label w-10" for="cb-41" id="cb-label-41">
            FLOW
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-42">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FRAX" id="cb-42" name="i" type="checkbox" value="42">
        <label class="form-check-label w-10" for="cb-42" id="cb-label-42">
            FRAX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-43">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FRAX3CRV-f" id="cb-43" name="i" type="checkbox" value="43">
        <label class="form-check-label w-10" for="cb-43" id="cb-label-43">
            FRAX3CRV-f
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-44">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FTM" id="cb-44" name="i" type="checkbox" value="44">
        <label class="form-check-label w-10" for="cb-44" id="cb-label-44">
            FTM
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-45">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FTT" id="cb-45" name="i" type="checkbox" value="45">
        <label class="form-check-label w-10" for="cb-45" id="cb-label-45">
            FTT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-46">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="G-UNI" id="cb-46" name="i" type="checkbox" value="46">
        <label class="form-check-label w-10" for="cb-46" id="cb-label-46">
            G-UNI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-47">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="GRT" id="cb-47" name="i" type="checkbox" value="47">
        <label class="form-check-label w-10" for="cb-47" id="cb-label-47">
            GRT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-48">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="GT" id="cb-48" name="i" type="checkbox" value="48">
        <label class="form-check-label w-10" for="cb-48" id="cb-label-48">
            GT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-49">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="HBAR" id="cb-49" name="i" type="checkbox" value="49">
        <label class="form-check-label w-10" for="cb-49" id="cb-label-49">
            HBAR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-50">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="HEART" id="cb-50" name="i" type="checkbox" value="50">
        <label class="form-check-label w-10" for="cb-50" id="cb-label-50">
            HEART
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-51">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="HNT" id="cb-51" name="i" type="checkbox" value="51">
        <label class="form-check-label w-10" for="cb-51" id="cb-label-51">
            HNT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-52">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="HT" id="cb-52" name="i" type="checkbox" value="52">
        <label class="form-check-label w-10" for="cb-52" id="cb-label-52">
            HT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-53">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ICP" id="cb-53" name="i" type="checkbox" value="53">
        <label class="form-check-label w-10" for="cb-53" id="cb-label-53">
            ICP
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-54">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="KAVA" id="cb-54" name="i" type="checkbox" value="54">
        <label class="form-check-label w-10" for="cb-54" id="cb-label-54">
            KAVA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-55">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="KCS" id="cb-55" name="i" type="checkbox" value="55">
        <label class="form-check-label w-10" for="cb-55" id="cb-label-55">
            KCS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-56">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="KLAY" id="cb-56" name="i" type="checkbox" value="56">
        <label class="form-check-label w-10" for="cb-56" id="cb-label-56">
            KLAY
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-57">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="LDO" id="cb-57" name="i" type="checkbox" value="57">
        <label class="form-check-label w-10" for="cb-57" id="cb-label-57">
            LDO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-58">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="LINK" id="cb-58" name="i" type="checkbox" value="58">
        <label class="form-check-label w-10" for="cb-58" id="cb-label-58">
            LINK
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-59">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="LTC" id="cb-59" name="i" type="checkbox" value="59">
        <label class="form-check-label w-10" for="cb-59" id="cb-label-59">
            LTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-60">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="LUNC" id="cb-60" name="i" type="checkbox" value="60">
        <label class="form-check-label w-10" for="cb-60" id="cb-label-60">
            LUNC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-61">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="MANA" id="cb-61" name="i" type="checkbox" value="61">
        <label class="form-check-label w-10" for="cb-61" id="cb-label-61">
            MANA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-62">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="MATIC" id="cb-62" name="i" type="checkbox" value="62">
        <label class="form-check-label w-10" for="cb-62" id="cb-label-62">
            MATIC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-63">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="MIOTA" id="cb-63" name="i" type="checkbox" value="63">
        <label class="form-check-label w-10" for="cb-63" id="cb-label-63">
            MIOTA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-64">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="MKR" id="cb-64" name="i" type="checkbox" value="64">
        <label class="form-check-label w-10" for="cb-64" id="cb-label-64">
            MKR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-65">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="NEAR" id="cb-65" name="i" type="checkbox" value="65">
        <label class="form-check-label w-10" for="cb-65" id="cb-label-65">
            NEAR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-66">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="NEO" id="cb-66" name="i" type="checkbox" value="66">
        <label class="form-check-label w-10" for="cb-66" id="cb-label-66">
            NEO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-67">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="NEXO" id="cb-67" name="i" type="checkbox" value="67">
        <label class="form-check-label w-10" for="cb-67" id="cb-label-67">
            NEXO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-68">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="OSMO" id="cb-68" name="i" type="checkbox" value="68">
        <label class="form-check-label w-10" for="cb-68" id="cb-label-68">
            OSMO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-69">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="PAXG" id="cb-69" name="i" type="checkbox" value="69">
        <label class="form-check-label w-10" for="cb-69" id="cb-label-69">
            PAXG
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-70">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="QNT" id="cb-70" name="i" type="checkbox" value="70">
        <label class="form-check-label w-10" for="cb-70" id="cb-label-70">
            QNT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-71">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="RUNE" id="cb-71" name="i" type="checkbox" value="71">
        <label class="form-check-label w-10" for="cb-71" id="cb-label-71">
            RUNE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-72">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="SAND" id="cb-72" name="i" type="checkbox" value="72">
        <label class="form-check-label w-10" for="cb-72" id="cb-label-72">
            SAND
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-73">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="SHIB" id="cb-73" name="i" type="checkbox" value="73">
        <label class="form-check-label w-10" for="cb-73" id="cb-label-73">
            SHIB
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-74">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="SNX" id="cb-74" name="i" type="checkbox" value="74">
        <label class="form-check-label w-10" for="cb-74" id="cb-label-74">
            SNX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-75">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="SOL" id="cb-75" name="i" type="checkbox" value="75">
        <label class="form-check-label w-10" for="cb-75" id="cb-label-75">
            SOL
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-76">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="STETH" id="cb-76" name="i" type="checkbox" value="76">
        <label class="form-check-label w-10" for="cb-76" id="cb-label-76">
            STETH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-77">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="THETA" id="cb-77" name="i" type="checkbox" value="77">
        <label class="form-check-label w-10" for="cb-77" id="cb-label-77">
            THETA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-78">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="TKX" id="cb-78" name="i" type="checkbox" value="78">
        <label class="form-check-label w-10" for="cb-78" id="cb-label-78">
            TKX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-79">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="TRX" id="cb-79" name="i" type="checkbox" value="79">
        <label class="form-check-label w-10" for="cb-79" id="cb-label-79">
            TRX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-80">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="TUSD" id="cb-80" name="i" type="checkbox" value="80">
        <label class="form-check-label w-10" for="cb-80" id="cb-label-80">
            TUSD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-81">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="UNI" id="cb-81" name="i" type="checkbox" value="81">
        <label class="form-check-label w-10" for="cb-81" id="cb-label-81">
            UNI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-82">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USDC" id="cb-82" name="i" type="checkbox" value="82">
        <label class="form-check-label w-10" for="cb-82" id="cb-label-82">
            USDC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-83">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USDD" id="cb-83" name="i" type="checkbox" value="83">
        <label class="form-check-label w-10" for="cb-83" id="cb-label-83">
            USDD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-84">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USDP" id="cb-84" name="i" type="checkbox" value="84">
        <label class="form-check-label w-10" for="cb-84" id="cb-label-84">
            USDP
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-85">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USDT" id="cb-85" name="i" type="checkbox" value="85">
        <label class="form-check-label w-10" for="cb-85" id="cb-label-85">
            USDT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-86">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USTC" id="cb-86" name="i" type="checkbox" value="86">
        <label class="form-check-label w-10" for="cb-86" id="cb-label-86">
            USTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-87">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="VET" id="cb-87" name="i" type="checkbox" value="87">
        <label class="form-check-label w-10" for="cb-87" id="cb-label-87">
            VET
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-88">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="VGX" id="cb-88" name="i" type="checkbox" value="88">
        <label class="form-check-label w-10" for="cb-88" id="cb-label-88">
            VGX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-89">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="WBTC" id="cb-89" name="i" type="checkbox" value="89">
        <label class="form-check-label w-10" for="cb-89" id="cb-label-89">
            WBTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-90">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XCN" id="cb-90" name="i" type="checkbox" value="90">
        <label class="form-check-label w-10" for="cb-90" id="cb-label-90">
            XCN
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-91">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XDC" id="cb-91" name="i" type="checkbox" value="91">
        <label class="form-check-label w-10" for="cb-91" id="cb-label-91">
            XDC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-92">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XEC" id="cb-92" name="i" type="checkbox" value="92">
        <label class="form-check-label w-10" for="cb-92" id="cb-label-92">
            XEC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-93">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XLM" id="cb-93" name="i" type="checkbox" value="93">
        <label class="form-check-label w-10" for="cb-93" id="cb-label-93">
            XLM
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-94">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XMR" id="cb-94" name="i" type="checkbox" value="94">
        <label class="form-check-label w-10" for="cb-94" id="cb-label-94">
            XMR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-95">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XRD" id="cb-95" name="i" type="checkbox" value="95">
        <label class="form-check-label w-10" for="cb-95" id="cb-label-95">
            XRD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-96">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XRP" id="cb-96" name="i" type="checkbox" value="96">
        <label class="form-check-label w-10" for="cb-96" id="cb-label-96">
            XRP
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-97">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XTZ" id="cb-97" name="i" type="checkbox" value="97">
        <label class="form-check-label w-10" for="cb-97" id="cb-label-97">
            XTZ
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-98">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ZEC" id="cb-98" name="i" type="checkbox" value="98">
        <label class="form-check-label w-10" for="cb-98" id="cb-label-98">
            ZEC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-99">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ZIL" id="cb-99" name="i" type="checkbox" value="99">
        <label class="form-check-label w-10" for="cb-99" id="cb-label-99">
            ZIL
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-100">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="f6-sOHM" id="cb-100" name="i" type="checkbox" value="100">
        <label class="form-check-label w-10" for="cb-100" id="cb-label-100">
            f6-sOHM
        </label>
    </div>
</div>

<div id="end">
    <input checked="checked" class="very-hidden" id="cb-expect-ikeys" name="expect.ikeys" type="checkbox" value="True">
    <div class="form-check mx-auto filter-check" hx-post="ml" hx-target="#ml-lander" hx-trigger="click consume" hx-vals='{"base.sort.col": "rank", "base.sort.dir": "a", "filter.sort.str": "", "filter.sort.col": "", "modal.name": "symbol", "duplicated.col": ""}' id="cb-outer-combo-0">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="(Select All)" id="cb-0" name="i" style="pointer-events: none;" type="checkbox" value="0">
        <label class="form-check-label w-10" for="cb-0" id="cb-label-0">
            (Select All)
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-1">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="AAVE" id="cb-1" name="i" type="checkbox" value="1">
        <label class="form-check-label w-10" for="cb-1" id="cb-label-1">
            AAVE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-2">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ADA" id="cb-2" name="i" type="checkbox" value="2">
        <label class="form-check-label w-10" for="cb-2" id="cb-label-2">
            ADA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-3">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ALGO" id="cb-3" name="i" type="checkbox" value="3">
        <label class="form-check-label w-10" for="cb-3" id="cb-label-3">
            ALGO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-4">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="APE" id="cb-4" name="i" type="checkbox" value="4">
        <label class="form-check-label w-10" for="cb-4" id="cb-label-4">
            APE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-5">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="AR" id="cb-5" name="i" type="checkbox" value="5">
        <label class="form-check-label w-10" for="cb-5" id="cb-label-5">
            AR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-6">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ATOM" id="cb-6" name="i" type="checkbox" value="6">
        <label class="form-check-label w-10" for="cb-6" id="cb-label-6">
            ATOM
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-7">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="AVAX" id="cb-7" name="i" type="checkbox" value="7">
        <label class="form-check-label w-10" for="cb-7" id="cb-label-7">
            AVAX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-8">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="AXS" id="cb-8" name="i" type="checkbox" value="8">
        <label class="form-check-label w-10" for="cb-8" id="cb-label-8">
            AXS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-9">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BAT" id="cb-9" name="i" type="checkbox" value="9">
        <label class="form-check-label w-10" for="cb-9" id="cb-label-9">
            BAT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-10">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BCH" id="cb-10" name="i" type="checkbox" value="10">
        <label class="form-check-label w-10" for="cb-10" id="cb-label-10">
            BCH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-11">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BIT" id="cb-11" name="i" type="checkbox" value="11">
        <label class="form-check-label w-10" for="cb-11" id="cb-label-11">
            BIT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-12">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BMAX" id="cb-12" name="i" type="checkbox" value="12">
        <label class="form-check-label w-10" for="cb-12" id="cb-label-12">
            BMAX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-13">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BNB" id="cb-13" name="i" type="checkbox" value="13">
        <label class="form-check-label w-10" for="cb-13" id="cb-label-13">
            BNB
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-14">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BOT" id="cb-14" name="i" type="checkbox" value="14">
        <label class="form-check-label w-10" for="cb-14" id="cb-label-14">
            BOT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-15">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BSV" id="cb-15" name="i" type="checkbox" value="15">
        <label class="form-check-label w-10" for="cb-15" id="cb-label-15">
            BSV
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-16">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BTC" id="cb-16" name="i" type="checkbox" value="16">
        <label class="form-check-label w-10" for="cb-16" id="cb-label-16">
            BTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-17">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BTT" id="cb-17" name="i" type="checkbox" value="17">
        <label class="form-check-label w-10" for="cb-17" id="cb-label-17">
            BTT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-18">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="BUSD" id="cb-18" name="i" type="checkbox" value="18">
        <label class="form-check-label w-10" for="cb-18" id="cb-label-18">
            BUSD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-19">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CAKE" id="cb-19" name="i" type="checkbox" value="19">
        <label class="form-check-label w-10" for="cb-19" id="cb-label-19">
            CAKE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-20">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CDAI" id="cb-20" name="i" type="checkbox" value="20">
        <label class="form-check-label w-10" for="cb-20" id="cb-label-20">
            CDAI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-21">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CETH" id="cb-21" name="i" type="checkbox" value="21">
        <label class="form-check-label w-10" for="cb-21" id="cb-label-21">
            CETH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-22">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CHZ" id="cb-22" name="i" type="checkbox" value="22">
        <label class="form-check-label w-10" for="cb-22" id="cb-label-22">
            CHZ
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-23">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CRO" id="cb-23" name="i" type="checkbox" value="23">
        <label class="form-check-label w-10" for="cb-23" id="cb-label-23">
            CRO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-24">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CUSDC" id="cb-24" name="i" type="checkbox" value="24">
        <label class="form-check-label w-10" for="cb-24" id="cb-label-24">
            CUSDC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-25">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="CWBTC" id="cb-25" name="i" type="checkbox" value="25">
        <label class="form-check-label w-10" for="cb-25" id="cb-label-25">
            CWBTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-26">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="DAI" id="cb-26" name="i" type="checkbox" value="26">
        <label class="form-check-label w-10" for="cb-26" id="cb-label-26">
            DAI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-27">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="DASH" id="cb-27" name="i" type="checkbox" value="27">
        <label class="form-check-label w-10" for="cb-27" id="cb-label-27">
            DASH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-28">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="DOGE" id="cb-28" name="i" type="checkbox" value="28">
        <label class="form-check-label w-10" for="cb-28" id="cb-label-28">
            DOGE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-29">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="DOT" id="cb-29" name="i" type="checkbox" value="29">
        <label class="form-check-label w-10" for="cb-29" id="cb-label-29">
            DOT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-30">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ECOIN" id="cb-30" name="i" type="checkbox" value="30">
        <label class="form-check-label w-10" for="cb-30" id="cb-label-30">
            ECOIN
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-31">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="EGLD" id="cb-31" name="i" type="checkbox" value="31">
        <label class="form-check-label w-10" for="cb-31" id="cb-label-31">
            EGLD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-32">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ENJ" id="cb-32" name="i" type="checkbox" value="32">
        <label class="form-check-label w-10" for="cb-32" id="cb-label-32">
            ENJ
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-33">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ENS" id="cb-33" name="i" type="checkbox" value="33">
        <label class="form-check-label w-10" for="cb-33" id="cb-label-33">
            ENS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-34">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="EOS" id="cb-34" name="i" type="checkbox" value="34">
        <label class="form-check-label w-10" for="cb-34" id="cb-label-34">
            EOS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-35">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ETC" id="cb-35" name="i" type="checkbox" value="35">
        <label class="form-check-label w-10" for="cb-35" id="cb-label-35">
            ETC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-36">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ETH" id="cb-36" name="i" type="checkbox" value="36">
        <label class="form-check-label w-10" for="cb-36" id="cb-label-36">
            ETH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-37">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ETHW" id="cb-37" name="i" type="checkbox" value="37">
        <label class="form-check-label w-10" for="cb-37" id="cb-label-37">
            ETHW
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-38">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="EVMOS" id="cb-38" name="i" type="checkbox" value="38">
        <label class="form-check-label w-10" for="cb-38" id="cb-label-38">
            EVMOS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-39">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FEI" id="cb-39" name="i" type="checkbox" value="39">
        <label class="form-check-label w-10" for="cb-39" id="cb-label-39">
            FEI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-40">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FIL" id="cb-40" name="i" type="checkbox" value="40">
        <label class="form-check-label w-10" for="cb-40" id="cb-label-40">
            FIL
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-41">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FLOW" id="cb-41" name="i" type="checkbox" value="41">
        <label class="form-check-label w-10" for="cb-41" id="cb-label-41">
            FLOW
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-42">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FRAX" id="cb-42" name="i" type="checkbox" value="42">
        <label class="form-check-label w-10" for="cb-42" id="cb-label-42">
            FRAX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-43">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FRAX3CRV-f" id="cb-43" name="i" type="checkbox" value="43">
        <label class="form-check-label w-10" for="cb-43" id="cb-label-43">
            FRAX3CRV-f
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-44">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FTM" id="cb-44" name="i" type="checkbox" value="44">
        <label class="form-check-label w-10" for="cb-44" id="cb-label-44">
            FTM
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-45">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="FTT" id="cb-45" name="i" type="checkbox" value="45">
        <label class="form-check-label w-10" for="cb-45" id="cb-label-45">
            FTT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-46">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="G-UNI" id="cb-46" name="i" type="checkbox" value="46">
        <label class="form-check-label w-10" for="cb-46" id="cb-label-46">
            G-UNI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-47">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="GRT" id="cb-47" name="i" type="checkbox" value="47">
        <label class="form-check-label w-10" for="cb-47" id="cb-label-47">
            GRT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-48">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="GT" id="cb-48" name="i" type="checkbox" value="48">
        <label class="form-check-label w-10" for="cb-48" id="cb-label-48">
            GT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-49">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="HBAR" id="cb-49" name="i" type="checkbox" value="49">
        <label class="form-check-label w-10" for="cb-49" id="cb-label-49">
            HBAR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-50">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="HEART" id="cb-50" name="i" type="checkbox" value="50">
        <label class="form-check-label w-10" for="cb-50" id="cb-label-50">
            HEART
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-51">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="HNT" id="cb-51" name="i" type="checkbox" value="51">
        <label class="form-check-label w-10" for="cb-51" id="cb-label-51">
            HNT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-52">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="HT" id="cb-52" name="i" type="checkbox" value="52">
        <label class="form-check-label w-10" for="cb-52" id="cb-label-52">
            HT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-53">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ICP" id="cb-53" name="i" type="checkbox" value="53">
        <label class="form-check-label w-10" for="cb-53" id="cb-label-53">
            ICP
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-54">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="KAVA" id="cb-54" name="i" type="checkbox" value="54">
        <label class="form-check-label w-10" for="cb-54" id="cb-label-54">
            KAVA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-55">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="KCS" id="cb-55" name="i" type="checkbox" value="55">
        <label class="form-check-label w-10" for="cb-55" id="cb-label-55">
            KCS
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-56">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="KLAY" id="cb-56" name="i" type="checkbox" value="56">
        <label class="form-check-label w-10" for="cb-56" id="cb-label-56">
            KLAY
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-57">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="LDO" id="cb-57" name="i" type="checkbox" value="57">
        <label class="form-check-label w-10" for="cb-57" id="cb-label-57">
            LDO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-58">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="LINK" id="cb-58" name="i" type="checkbox" value="58">
        <label class="form-check-label w-10" for="cb-58" id="cb-label-58">
            LINK
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-59">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="LTC" id="cb-59" name="i" type="checkbox" value="59">
        <label class="form-check-label w-10" for="cb-59" id="cb-label-59">
            LTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-60">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="LUNC" id="cb-60" name="i" type="checkbox" value="60">
        <label class="form-check-label w-10" for="cb-60" id="cb-label-60">
            LUNC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-61">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="MANA" id="cb-61" name="i" type="checkbox" value="61">
        <label class="form-check-label w-10" for="cb-61" id="cb-label-61">
            MANA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-62">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="MATIC" id="cb-62" name="i" type="checkbox" value="62">
        <label class="form-check-label w-10" for="cb-62" id="cb-label-62">
            MATIC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-63">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="MIOTA" id="cb-63" name="i" type="checkbox" value="63">
        <label class="form-check-label w-10" for="cb-63" id="cb-label-63">
            MIOTA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-64">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="MKR" id="cb-64" name="i" type="checkbox" value="64">
        <label class="form-check-label w-10" for="cb-64" id="cb-label-64">
            MKR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-65">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="NEAR" id="cb-65" name="i" type="checkbox" value="65">
        <label class="form-check-label w-10" for="cb-65" id="cb-label-65">
            NEAR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-66">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="NEO" id="cb-66" name="i" type="checkbox" value="66">
        <label class="form-check-label w-10" for="cb-66" id="cb-label-66">
            NEO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-67">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="NEXO" id="cb-67" name="i" type="checkbox" value="67">
        <label class="form-check-label w-10" for="cb-67" id="cb-label-67">
            NEXO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-68">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="OSMO" id="cb-68" name="i" type="checkbox" value="68">
        <label class="form-check-label w-10" for="cb-68" id="cb-label-68">
            OSMO
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-69">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="PAXG" id="cb-69" name="i" type="checkbox" value="69">
        <label class="form-check-label w-10" for="cb-69" id="cb-label-69">
            PAXG
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-70">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="QNT" id="cb-70" name="i" type="checkbox" value="70">
        <label class="form-check-label w-10" for="cb-70" id="cb-label-70">
            QNT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-71">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="RUNE" id="cb-71" name="i" type="checkbox" value="71">
        <label class="form-check-label w-10" for="cb-71" id="cb-label-71">
            RUNE
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-72">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="SAND" id="cb-72" name="i" type="checkbox" value="72">
        <label class="form-check-label w-10" for="cb-72" id="cb-label-72">
            SAND
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-73">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="SHIB" id="cb-73" name="i" type="checkbox" value="73">
        <label class="form-check-label w-10" for="cb-73" id="cb-label-73">
            SHIB
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-74">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="SNX" id="cb-74" name="i" type="checkbox" value="74">
        <label class="form-check-label w-10" for="cb-74" id="cb-label-74">
            SNX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-75">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="SOL" id="cb-75" name="i" type="checkbox" value="75">
        <label class="form-check-label w-10" for="cb-75" id="cb-label-75">
            SOL
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-76">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="STETH" id="cb-76" name="i" type="checkbox" value="76">
        <label class="form-check-label w-10" for="cb-76" id="cb-label-76">
            STETH
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-77">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="THETA" id="cb-77" name="i" type="checkbox" value="77">
        <label class="form-check-label w-10" for="cb-77" id="cb-label-77">
            THETA
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-78">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="TKX" id="cb-78" name="i" type="checkbox" value="78">
        <label class="form-check-label w-10" for="cb-78" id="cb-label-78">
            TKX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-79">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="TRX" id="cb-79" name="i" type="checkbox" value="79">
        <label class="form-check-label w-10" for="cb-79" id="cb-label-79">
            TRX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-80">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="TUSD" id="cb-80" name="i" type="checkbox" value="80">
        <label class="form-check-label w-10" for="cb-80" id="cb-label-80">
            TUSD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-81">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="UNI" id="cb-81" name="i" type="checkbox" value="81">
        <label class="form-check-label w-10" for="cb-81" id="cb-label-81">
            UNI
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-82">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USDC" id="cb-82" name="i" type="checkbox" value="82">
        <label class="form-check-label w-10" for="cb-82" id="cb-label-82">
            USDC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-83">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USDD" id="cb-83" name="i" type="checkbox" value="83">
        <label class="form-check-label w-10" for="cb-83" id="cb-label-83">
            USDD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-84">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USDP" id="cb-84" name="i" type="checkbox" value="84">
        <label class="form-check-label w-10" for="cb-84" id="cb-label-84">
            USDP
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-85">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USDT" id="cb-85" name="i" type="checkbox" value="85">
        <label class="form-check-label w-10" for="cb-85" id="cb-label-85">
            USDT
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-86">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="USTC" id="cb-86" name="i" type="checkbox" value="86">
        <label class="form-check-label w-10" for="cb-86" id="cb-label-86">
            USTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-87">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="VET" id="cb-87" name="i" type="checkbox" value="87">
        <label class="form-check-label w-10" for="cb-87" id="cb-label-87">
            VET
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-88">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="VGX" id="cb-88" name="i" type="checkbox" value="88">
        <label class="form-check-label w-10" for="cb-88" id="cb-label-88">
            VGX
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-89">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="WBTC" id="cb-89" name="i" type="checkbox" value="89">
        <label class="form-check-label w-10" for="cb-89" id="cb-label-89">
            WBTC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-90">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XCN" id="cb-90" name="i" type="checkbox" value="90">
        <label class="form-check-label w-10" for="cb-90" id="cb-label-90">
            XCN
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-91">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XDC" id="cb-91" name="i" type="checkbox" value="91">
        <label class="form-check-label w-10" for="cb-91" id="cb-label-91">
            XDC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-92">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XEC" id="cb-92" name="i" type="checkbox" value="92">
        <label class="form-check-label w-10" for="cb-92" id="cb-label-92">
            XEC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-93">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XLM" id="cb-93" name="i" type="checkbox" value="93">
        <label class="form-check-label w-10" for="cb-93" id="cb-label-93">
            XLM
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-94">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XMR" id="cb-94" name="i" type="checkbox" value="94">
        <label class="form-check-label w-10" for="cb-94" id="cb-label-94">
            XMR
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-95">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XRD" id="cb-95" name="i" type="checkbox" value="95">
        <label class="form-check-label w-10" for="cb-95" id="cb-label-95">
            XRD
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-96">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XRP" id="cb-96" name="i" type="checkbox" value="96">
        <label class="form-check-label w-10" for="cb-96" id="cb-label-96">
            XRP
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-97">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="XTZ" id="cb-97" name="i" type="checkbox" value="97">
        <label class="form-check-label w-10" for="cb-97" id="cb-label-97">
            XTZ
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-98">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ZEC" id="cb-98" name="i" type="checkbox" value="98">
        <label class="form-check-label w-10" for="cb-98" id="cb-label-98">
            ZEC
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-99">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="ZIL" id="cb-99" name="i" type="checkbox" value="99">
        <label class="form-check-label w-10" for="cb-99" id="cb-label-99">
            ZIL
        </label>
    </div>
    <div class="form-check mx-auto filter-check" id="cb-outer-combo-100">
        <input checked="checked" class="form-check-input float-none tcheckbox" data-value="f6-sOHM" id="cb-100" name="i" type="checkbox" value="100">
        <label class="form-check-label w-10" for="cb-100" id="cb-label-100">
            f6-sOHM
        </label>
    </div>
</div>
      
<script>
  /**
 * @typedef {object} ConfigHead
 *
 * @property {'merge' | 'append' | 'morph' | 'none'} [style]
 * @property {boolean} [block]
 * @property {boolean} [ignore]
 * @property {function(Element): boolean} [shouldPreserve]
 * @property {function(Element): boolean} [shouldReAppend]
 * @property {function(Element): boolean} [shouldRemove]
 * @property {function(Element, {added: Node[], kept: Element[], removed: Element[]}): void} [afterHeadMorphed]
 */

/**
 * @typedef {object} ConfigCallbacks
 *
 * @property {function(Node): boolean} [beforeNodeAdded]
 * @property {function(Node): void} [afterNodeAdded]
 * @property {function(Element, Node): boolean} [beforeNodeMorphed]
 * @property {function(Element, Node): void} [afterNodeMorphed]
 * @property {function(Element): boolean} [beforeNodeRemoved]
 * @property {function(Element): void} [afterNodeRemoved]
 * @property {function(string, Element, "update" | "remove"): boolean} [beforeAttributeUpdated]
 */

/**
 * @typedef {object} Config
 *
 * @property {'outerHTML' | 'innerHTML'} [morphStyle]
 * @property {boolean} [ignoreActive]
 * @property {boolean} [ignoreActiveValue]
 * @property {ConfigCallbacks} [callbacks]
 * @property {ConfigHead} [head]
 */

/**
 * @typedef {function} NoOp
 *
 * @returns {void}
 */

/**
 * @typedef {object} ConfigHeadInternal
 *
 * @property {'merge' | 'append' | 'morph' | 'none'} style
 * @property {boolean} [block]
 * @property {boolean} [ignore]
 * @property {(function(Element): boolean) | NoOp} shouldPreserve
 * @property {(function(Element): boolean) | NoOp} shouldReAppend
 * @property {(function(Element): boolean) | NoOp} shouldRemove
 * @property {(function(Element, {added: Node[], kept: Element[], removed: Element[]}): void) | NoOp} afterHeadMorphed
 */

/**
 * @typedef {object} ConfigCallbacksInternal
 *
 * @property {(function(Node): boolean) | NoOp} beforeNodeAdded
 * @property {(function(Node): void) | NoOp} afterNodeAdded
 * @property {(function(Node, Node): boolean) | NoOp} beforeNodeMorphed
 * @property {(function(Node, Node): void) | NoOp} afterNodeMorphed
 * @property {(function(Node): boolean) | NoOp} beforeNodeRemoved
 * @property {(function(Node): void) | NoOp} afterNodeRemoved
 * @property {(function(string, Element, "update" | "remove"): boolean) | NoOp} beforeAttributeUpdated
 */

/**
 * @typedef {object} ConfigInternal
 *
 * @property {'outerHTML' | 'innerHTML'} morphStyle
 * @property {boolean} [ignoreActive]
 * @property {boolean} [ignoreActiveValue]
 * @property {ConfigCallbacksInternal} callbacks
 * @property {ConfigHeadInternal} head
 */

/**
 * @typedef {Function} Morph
 *
 * @param {Element | Document} oldNode
 * @param {Element | Node | HTMLCollection | Node[] | string | null} newContent
 * @param {Config} [config]
 * @returns {undefined | HTMLCollection | Node[]}
 */

// base IIFE to define idiomorph
/**
 *
 * @type {{defaults: ConfigInternal, morph: Morph}}
 */
window.Idiomorph = (function () {
        'use strict';

        /**
         * @typedef {object} MorphContext
         *
         * @property {Node} target
         * @property {Node} newContent
         * @property {ConfigInternal} config
         * @property {ConfigInternal['morphStyle']} morphStyle
         * @property {ConfigInternal['ignoreActive']} ignoreActive
         * @property {ConfigInternal['ignoreActiveValue']} ignoreActiveValue
         * @property {Map<Node, Set<string>>} idMap
         * @property {Set<string>} deadIds
         * @property {ConfigInternal['callbacks']} callbacks
         * @property {ConfigInternal['head']} head
         */

        //=============================================================================
        // AND NOW IT BEGINS...
        //=============================================================================

        /**
         *
         * @type {Set<string>}
         */
        let EMPTY_SET = new Set();

        /**
         * Default configuration values, updatable by users now
         * @type {ConfigInternal}
         */
        let defaults = {
            morphStyle: "outerHTML",
            callbacks : {
                beforeNodeAdded: noOp,
                afterNodeAdded: noOp,
                beforeNodeMorphed: noOp,
                afterNodeMorphed: noOp,
                beforeNodeRemoved: noOp,
                afterNodeRemoved: noOp,
                beforeAttributeUpdated: noOp,

            },
            head: {
                style: 'merge',
                shouldPreserve: function (elt) {
                    return elt.getAttribute("im-preserve") === "true";
                },
                shouldReAppend: function (elt) {
                    return elt.getAttribute("im-re-append") === "true";
                },
                shouldRemove: noOp,
                afterHeadMorphed: noOp,
            }
        };


        /**
         * =============================================================================
         * Core Morphing Algorithm - morph, morphNormalizedContent, morphOldNodeTo, morphChildren
         * =============================================================================
         *
         * @param {Element | Document} oldNode
         * @param {Element | Node | HTMLCollection | Node[] | string | null} newContent
         * @param {Config} [config]
         * @returns {undefined | HTMLCollection | Node[]}
         */
        function morph(oldNode, newContent, config = {}) {

            if (oldNode instanceof Document) {
                oldNode = oldNode.documentElement;
            }

            if (typeof newContent === 'string') {
                newContent = parseContent(newContent);
            }

            let normalizedContent = normalizeContent(newContent);

            let ctx = createMorphContext(oldNode, normalizedContent, config);

            return morphNormalizedContent(oldNode, normalizedContent, ctx);
        }

        /**
         *
         * @param {Element} oldNode
         * @param {Element} normalizedNewContent
         * @param {MorphContext} ctx
         * @returns {undefined | HTMLCollection| Node[]}
         */
        function morphNormalizedContent(oldNode, normalizedNewContent, ctx) {
            if (ctx.head.block) {
                let oldHead = oldNode.querySelector('head');
                let newHead = normalizedNewContent.querySelector('head');
                if (oldHead && newHead) {
                    let promises = handleHeadElement(newHead, oldHead, ctx);
                    // when head promises resolve, call morph again, ignoring the head tag
                    Promise.all(promises).then(function () {
                        morphNormalizedContent(oldNode, normalizedNewContent, Object.assign(ctx, {
                            head: {
                                block: false,
                                ignore: true
                            }
                        }));
                    });
                    return;
                }
            }

            if (ctx.morphStyle === "innerHTML") {

                // innerHTML, so we are only updating the children
                morphChildren(normalizedNewContent, oldNode, ctx);
                return Array.from(oldNode.children);

            } else if (ctx.morphStyle === "outerHTML" || ctx.morphStyle == null) {
                // otherwise find the best element match in the new content, morph that, and merge its siblings
                // into either side of the best match
                let bestMatch = findBestNodeMatch(normalizedNewContent, oldNode, ctx);

                // stash the siblings that will need to be inserted on either side of the best match
                let previousSibling = bestMatch?.previousSibling ?? null;
                let nextSibling = bestMatch?.nextSibling ?? null;

                // morph it
                let morphedNode = morphOldNodeTo(oldNode, bestMatch, ctx);

                if (bestMatch) {
                    // if there was a best match, merge the siblings in too and return the
                    // whole bunch
                    if (morphedNode) {
                        return insertSiblings(previousSibling, morphedNode, nextSibling);
                    }
                } else {
                    // otherwise nothing was added to the DOM
                    return []
                }
            } else {
                throw "Do not understand how to morph style " + ctx.morphStyle;
            }
        }


        /**
         * @param {Node} possibleActiveElement
         * @param {MorphContext} ctx
         * @returns {boolean}
         */
        // TODO: ignoreActive and ignoreActiveValue are marked as optional since they are not
        //   initialised in the default config object. As a result the && in the function body may
        //   return undefined instead of boolean. Either expand the type of the return value to
        //   include undefined or wrap the ctx.ignoreActiveValue into a Boolean()
        function ignoreValueOfActiveElement(possibleActiveElement, ctx) {
            return !!ctx.ignoreActiveValue && possibleActiveElement === document.activeElement && possibleActiveElement !== document.body;
        }

        /**
         * @param {Node} oldNode root node to merge content into
         * @param {Node | null} newContent new content to merge
         * @param {MorphContext} ctx the merge context
         * @returns {Node | null} the element that ended up in the DOM
         */
        function morphOldNodeTo(oldNode, newContent, ctx) {
            if (ctx.ignoreActive && oldNode === document.activeElement) {
                // don't morph focused element
            } else if (newContent == null) {
                if (ctx.callbacks.beforeNodeRemoved(oldNode) === false) return oldNode;

                oldNode.parentNode?.removeChild(oldNode);
                ctx.callbacks.afterNodeRemoved(oldNode);
                return null;
            } else if (!isSoftMatch(oldNode, newContent)) {
                if (ctx.callbacks.beforeNodeRemoved(oldNode) === false) return oldNode;
                if (ctx.callbacks.beforeNodeAdded(newContent) === false) return oldNode;

                oldNode.parentNode?.replaceChild(newContent, oldNode);
                ctx.callbacks.afterNodeAdded(newContent);
                ctx.callbacks.afterNodeRemoved(oldNode);
                return newContent;
            } else {
                if (ctx.callbacks.beforeNodeMorphed(oldNode, newContent) === false) return oldNode;

                if (oldNode instanceof HTMLHeadElement && ctx.head.ignore) {
                    // ignore the head element
                } else if (oldNode instanceof HTMLHeadElement && ctx.head.style !== "morph") {
                    // ok to cast: if newContent wasn't also a <head>, it would've got caught in the `!isSoftMatch` branch above
                    handleHeadElement(/** @type {HTMLHeadElement} */ (newContent), oldNode, ctx);
                } else {
                    syncNodeFrom(newContent, oldNode, ctx);
                    if (!ignoreValueOfActiveElement(oldNode, ctx)) {
                        morphChildren(newContent, oldNode, ctx);
                    }
                }
                ctx.callbacks.afterNodeMorphed(oldNode, newContent);
                return oldNode;
            }
            return null;
        }

        /**
         * This is the core algorithm for matching up children.  The idea is to use id sets to try to match up
         * nodes as faithfully as possible.  We greedily match, which allows us to keep the algorithm fast, but
         * by using id sets, we are able to better match up with content deeper in the DOM.
         *
         * Basic algorithm is, for each node in the new content:
         *
         * - if we have reached the end of the old parent, append the new content
         * - if the new content has an id set match with the current insertion point, morph
         * - search for an id set match
         * - if id set match found, morph
         * - otherwise search for a "soft" match
         * - if a soft match is found, morph
         * - otherwise, prepend the new node before the current insertion point
         *
         * The two search algorithms terminate if competing node matches appear to outweigh what can be achieved
         * with the current node.  See findIdSetMatch() and findSoftMatch() for details.
         *
         * @param {Node} newParent the parent element of the new content
         * @param {Node} oldParent the old content that we are merging the new content into
         * @param {MorphContext} ctx the merge context
         * @returns {void}
         */
        function morphChildren(newParent, oldParent, ctx) {
            if (newParent instanceof HTMLTemplateElement && oldParent instanceof HTMLTemplateElement) {
              newParent = newParent.content;
              oldParent = oldParent.content;
            }

            /**
             *
             * @type {Node | null}
             */
            let nextNewChild = newParent.firstChild;
            /**
             *
             * @type {Node | null}
             */
            let insertionPoint = oldParent.firstChild;
            let newChild;

            // run through all the new content
            while (nextNewChild) {

                newChild = nextNewChild;
                nextNewChild = newChild.nextSibling;

                // if we are at the end of the exiting parent's children, just append
                if (insertionPoint == null) {
                    if (ctx.callbacks.beforeNodeAdded(newChild) === false) continue;

                    oldParent.appendChild(newChild);
                    ctx.callbacks.afterNodeAdded(newChild);
                    removeIdsFromConsideration(ctx, newChild);
                    continue;
                }

                // if the current node has an id set match then morph
                if (isIdSetMatch(newChild, insertionPoint, ctx)) {
                    morphOldNodeTo(insertionPoint, newChild, ctx);
                    insertionPoint = insertionPoint.nextSibling;
                    removeIdsFromConsideration(ctx, newChild);
                    continue;
                }

                // otherwise search forward in the existing old children for an id set match
                let idSetMatch = findIdSetMatch(newParent, oldParent, newChild, insertionPoint, ctx);

                // if we found a potential match, remove the nodes until that point and morph
                if (idSetMatch) {
                    insertionPoint = removeNodesBetween(insertionPoint, idSetMatch, ctx);
                    morphOldNodeTo(idSetMatch, newChild, ctx);
                    removeIdsFromConsideration(ctx, newChild);
                    continue;
                }

                // no id set match found, so scan forward for a soft match for the current node
                let softMatch = findSoftMatch(newParent, oldParent, newChild, insertionPoint, ctx);

                // if we found a soft match for the current node, morph
                if (softMatch) {
                    insertionPoint = removeNodesBetween(insertionPoint, softMatch, ctx);
                    morphOldNodeTo(softMatch, newChild, ctx);
                    removeIdsFromConsideration(ctx, newChild);
                    continue;
                }

                // abandon all hope of morphing, just insert the new child before the insertion point
                // and move on
                if (ctx.callbacks.beforeNodeAdded(newChild) === false) continue;

                oldParent.insertBefore(newChild, insertionPoint);
                ctx.callbacks.afterNodeAdded(newChild);
                removeIdsFromConsideration(ctx, newChild);
            }

            // remove any remaining old nodes that didn't match up with new content
            while (insertionPoint !== null) {

                let tempNode = insertionPoint;
                insertionPoint = insertionPoint.nextSibling;
                removeNode(tempNode, ctx);
            }
        }

        //=============================================================================
        // Attribute Syncing Code
        //=============================================================================

        /**
         * @param {string} attr the attribute to be mutated
         * @param {Element} to the element that is going to be updated
         * @param {"update" | "remove"} updateType
         * @param {MorphContext} ctx the merge context
         * @returns {boolean} true if the attribute should be ignored, false otherwise
         */
        function ignoreAttribute(attr, to, updateType, ctx) {
            if(attr === 'value' && ctx.ignoreActiveValue && to === document.activeElement){
                return true;
            }
            return ctx.callbacks.beforeAttributeUpdated(attr, to, updateType) === false;
        }

        /**
         * syncs a given node with another node, copying over all attributes and
         * inner element state from the 'from' node to the 'to' node
         *
         * @param {Node} from the element to copy attributes & state from
         * @param {Node} to the element to copy attributes & state to
         * @param {MorphContext} ctx the merge context
         */
        function syncNodeFrom(from, to, ctx) {
            let type = from.nodeType

            // if is an element type, sync the attributes from the
            // new node into the new node
            if (type === 1 /* element type */) {
                const fromEl = /** @type {Element} */ (from);
                const toEl = /** @type {Element} */ (to);
                const fromAttributes = fromEl.attributes;
                const toAttributes = toEl.attributes;
                for (const fromAttribute of fromAttributes) {
                    if (ignoreAttribute(fromAttribute.name, toEl, 'update', ctx)) {
                        continue;
                    }
                    if (toEl.getAttribute(fromAttribute.name) !== fromAttribute.value) {
                        toEl.setAttribute(fromAttribute.name, fromAttribute.value);
                    }
                }
                // iterate backwards to avoid skipping over items when a delete occurs
  				for (let i = toAttributes.length - 1; 0 <= i; i--) {
                    const toAttribute = toAttributes[i];

                    // toAttributes is a live NamedNodeMap, so iteration+mutation is unsafe
                    // e.g. custom element attribute callbacks can remove other attributes
                    if (!toAttribute) continue;

                    if (!fromEl.hasAttribute(toAttribute.name)) {
                        if (ignoreAttribute(toAttribute.name, toEl, 'remove', ctx)) {
                            continue;
                        }
                        toEl.removeAttribute(toAttribute.name);
                    }
                }
            }

            // sync text nodes
            if (type === 8 /* comment */ || type === 3 /* text */) {
                if (to.nodeValue !== from.nodeValue) {
                    to.nodeValue = from.nodeValue;
                }
            }

            if (!ignoreValueOfActiveElement(to, ctx)) {
                // sync input values
                syncInputValue(from, to, ctx);
            }
        }

        /**
         * @param {Element} from element to sync the value from
         * @param {Element} to element to sync the value to
         * @param {string} attributeName the attribute name
         * @param {MorphContext} ctx the merge context
         */
        function syncBooleanAttribute(from, to, attributeName, ctx) {
            // TODO: prefer set/getAttribute here
            if (!(from instanceof Element && to instanceof Element)) return
            // @ts-ignore this function is only used on boolean attrs that are reflected as dom properties
            const fromLiveValue = from[attributeName], toLiveValue = to[attributeName];
            if (fromLiveValue !== toLiveValue) {
                let ignoreUpdate = ignoreAttribute(attributeName, to, 'update', ctx);
                if (!ignoreUpdate) {
                  // update attribute's associated DOM property
                  // @ts-ignore this function is only used on boolean attrs that are reflected as dom properties
                  to[attributeName] = from[attributeName];
                }
                if (fromLiveValue) {
                    if (!ignoreUpdate) {
                        // TODO: do we really want this? tests say so but it feels wrong
                        to.setAttribute(attributeName, fromLiveValue);
                    }
                } else {
                    if (!ignoreAttribute(attributeName, to, 'remove', ctx)) {
                        to.removeAttribute(attributeName);
                    }
                }
            }
        }

        /**
         * NB: many bothans died to bring us information:
         *
         *  https://github.com/patrick-steele-idem/morphdom/blob/master/src/specialElHandlers.js
         *  https://github.com/choojs/nanomorph/blob/master/lib/morph.jsL113
         *
         * @param {Node} from the element to sync the input value from
         * @param {Node} to the element to sync the input value to
         * @param {MorphContext} ctx the merge context
         */
        function syncInputValue(from, to, ctx) {
            if (from instanceof HTMLInputElement &&
                to instanceof HTMLInputElement &&
                from.type !== 'file') {

                let fromValue = from.value;
                let toValue = to.value;

                // sync boolean attributes
                syncBooleanAttribute(from, to, 'checked', ctx);
                syncBooleanAttribute(from, to, 'disabled', ctx);

                if (!from.hasAttribute('value')) {
                    if (!ignoreAttribute('value', to, 'remove', ctx)) {
                        to.value = '';
                        to.removeAttribute('value');
                    }
                } else if (fromValue !== toValue) {
                    if (!ignoreAttribute('value', to, 'update', ctx)) {
                        to.setAttribute('value', fromValue);
                        to.value = fromValue;
                    }
                }
            // TODO: QUESTION(1cg): this used to only check `from` unlike the other branches -- why?
            // did I break something?
            } else if (from instanceof HTMLOptionElement && to instanceof HTMLOptionElement) {
                syncBooleanAttribute(from, to, 'selected', ctx)
            } else if (from instanceof HTMLTextAreaElement && to instanceof HTMLTextAreaElement) {
                let fromValue = from.value;
                let toValue = to.value;
                if (ignoreAttribute('value', to, 'update', ctx)) {
                    return;
                }
                if (fromValue !== toValue) {
                    to.value = fromValue;
                }
                if (to.firstChild && to.firstChild.nodeValue !== fromValue) {
                    to.firstChild.nodeValue = fromValue
                }
            }
        }


        /**
         * =============================================================================
         *  The HEAD tag can be handled specially, either w/ a 'merge' or 'append' style
         * =============================================================================
         * @param {Element} newHeadTag
         * @param {Element} currentHead
         * @param {MorphContext} ctx
         * @returns {Promise<void>[]}
         */
        function handleHeadElement(newHeadTag, currentHead, ctx) {
            /**
             * @type {Node[]}
             */
            let added = []
            /**
             * @type {Element[]}
             */
            let removed = []
            /**
             * @type {Element[]}
             */
            let preserved = []
            /**
             * @type {Element[]}
             */
            let nodesToAppend = []

            let headMergeStyle = ctx.head.style;

            // put all new head elements into a Map, by their outerHTML
            let srcToNewHeadNodes = new Map();
            for (const newHeadChild of newHeadTag.children) {
                srcToNewHeadNodes.set(newHeadChild.outerHTML, newHeadChild);
            }

            // for each elt in the current head
            for (const currentHeadElt of currentHead.children) {

                // If the current head element is in the map
                let inNewContent = srcToNewHeadNodes.has(currentHeadElt.outerHTML);
                let isReAppended = ctx.head.shouldReAppend(currentHeadElt);
                let isPreserved = ctx.head.shouldPreserve(currentHeadElt);
                if (inNewContent || isPreserved) {
                    if (isReAppended) {
                        // remove the current version and let the new version replace it and re-execute
                        removed.push(currentHeadElt);
                    } else {
                        // this element already exists and should not be re-appended, so remove it from
                        // the new content map, preserving it in the DOM
                        srcToNewHeadNodes.delete(currentHeadElt.outerHTML);
                        preserved.push(currentHeadElt);
                    }
                } else {
                    if (headMergeStyle === "append") {
                        // we are appending and this existing element is not new content
                        // so if and only if it is marked for re-append do we do anything
                        if (isReAppended) {
                            removed.push(currentHeadElt);
                            nodesToAppend.push(currentHeadElt);
                        }
                    } else {
                        // if this is a merge, we remove this content since it is not in the new head
                        if (ctx.head.shouldRemove(currentHeadElt) !== false) {
                            removed.push(currentHeadElt);
                        }
                    }
                }
            }

            // Push the remaining new head elements in the Map into the
            // nodes to append to the head tag
            nodesToAppend.push(...srcToNewHeadNodes.values());
            log("to append: ", nodesToAppend);

            let promises = [];
            for (const newNode of nodesToAppend) {
                log("adding: ", newNode);
                // TODO: This could theoretically be null, based on type
                let newElt = /** @type {ChildNode} */ (
                  document.createRange().createContextualFragment(newNode.outerHTML).firstChild);
                log(newElt);
                if (ctx.callbacks.beforeNodeAdded(newElt) !== false) {
                    if (('href' in newElt && newElt.href) || ('src' in newElt && newElt.src)) {
                        /** @type {(result?: any) => void} */ let resolve;
                        let promise = new Promise(function (_resolve) {
                            resolve = _resolve;
                        });
                        newElt.addEventListener('load', function () {
                            resolve();
                        });
                        promises.push(promise);
                    }
                    currentHead.appendChild(newElt);
                    ctx.callbacks.afterNodeAdded(newElt);
                    added.push(newElt);
                }
            }

            // remove all removed elements, after we have appended the new elements to avoid
            // additional network requests for things like style sheets
            for (const removedElement of removed) {
                if (ctx.callbacks.beforeNodeRemoved(removedElement) !== false) {
                    currentHead.removeChild(removedElement);
                    ctx.callbacks.afterNodeRemoved(removedElement);
                }
            }

            ctx.head.afterHeadMorphed(currentHead, {added: added, kept: preserved, removed: removed});
            return promises;
        }

        //=============================================================================
        // Misc
        //=============================================================================

        /**
         * @param {any[]} _args
         */
        function log(..._args) {
            //console.log(args);
        }

        function noOp() {
        }


        /**
         * Deep merges the config object and the Idiomoroph.defaults object to
         * produce a final configuration object
         * @param {Config} config
         * @returns {ConfigInternal}
         */
        function mergeDefaults(config) {
            /**
             * @type {ConfigInternal}
             */
            let finalConfig= Object.assign({}, defaults);

            // copy top level stuff into final config
            Object.assign(finalConfig, config);

            // copy callbacks into final config (do this to deep merge the callbacks)
            finalConfig.callbacks = Object.assign({}, defaults.callbacks, config.callbacks);

            // copy head config into final config  (do this to deep merge the head)
            finalConfig.head = Object.assign({}, defaults.head, config.head);

            return finalConfig;
        }

        /**
         *
         * @param {Element} oldNode
         * @param {Element} newContent
         * @param {Config} config
         * @returns {MorphContext}
         */
        function createMorphContext(oldNode, newContent, config) {
            const mergedConfig = mergeDefaults(config);
            return {
                target: oldNode,
                newContent: newContent,
                config: mergedConfig,
                morphStyle: mergedConfig.morphStyle,
                ignoreActive: mergedConfig.ignoreActive,
                ignoreActiveValue: mergedConfig.ignoreActiveValue,
                idMap: createIdMap(oldNode, newContent),
                deadIds: new Set(),
                callbacks: mergedConfig.callbacks,
                head: mergedConfig.head
            }
        }

        /**
         *
         * @param {Node | null} node1
         * @param {Node | null} node2
         * @param {MorphContext} ctx
         * @returns {boolean}
         */
        // TODO: The function handles this as if it's Element or null, but the function is called in
        //   places where the arguments may be just a Node, not an Element
        function isIdSetMatch(node1, node2, ctx) {
            if (node1 == null || node2 == null) {
                return false;
            }
            if ((node1 instanceof Element) && (node2 instanceof Element) &&
                    node1.tagName === node2.tagName) {
                if (node1.id !== "" && node1.id === node2.id) {
                    return true;
                } else {
                    return getIdIntersectionCount(ctx, node1, node2) > 0;
                }
            }
            return false;
        }

        /**
         *
         * @param {Node | null} node1
         * @param {Node | null} node2
         * @returns {boolean}
         */
        function isSoftMatch(node1, node2) {
            if (node1 == null || node2 == null) {
                return false;
            }
            return node1.nodeType === node2.nodeType &&
              // ok to cast: if one is not element, `tagName` will be undefined and we'll compare that
              /** @type {Element} */ (node1).tagName === /** @type {Element} */ (node2).tagName
        }

        /**
         *
         * @param {Node} startInclusive
         * @param {Node} endExclusive
         * @param {MorphContext} ctx
         * @returns {Node | null}
         */
        function removeNodesBetween(startInclusive, endExclusive, ctx) {
            /** @type {Node | null} */ let cursor = startInclusive;
            while (cursor !== endExclusive) {
                let tempNode = /** @type {Node} */ (cursor);
                // TODO: Prefer assigning to a new variable here or expand the type of startInclusive
                //  to be Node | null
                cursor = tempNode.nextSibling;
                removeNode(tempNode, ctx);
            }
            removeIdsFromConsideration(ctx, endExclusive);
            return endExclusive.nextSibling;
        }


        /**
         * =============================================================================
         *  Scans forward from the insertionPoint in the old parent looking for a potential id match
         *  for the newChild.  We stop if we find a potential id match for the new child OR
         *  if the number of potential id matches we are discarding is greater than the
         *  potential id matches for the new child
         * =============================================================================
         * @param {Node} newContent
         * @param {Node} oldParent
         * @param {Node} newChild
         * @param {Node} insertionPoint
         * @param {MorphContext} ctx
         * @returns {null | Node}
         */
        function findIdSetMatch(newContent, oldParent, newChild, insertionPoint, ctx) {

            // max id matches we are willing to discard in our search
            let newChildPotentialIdCount = getIdIntersectionCount(ctx, newChild, oldParent);

            /**
             * @type {Node | null}
             */
            let potentialMatch = null;

            // only search forward if there is a possibility of an id match
            if (newChildPotentialIdCount > 0) {

                // TODO: This is ghosting the potentialMatch variable outside of this block.
                //   Probably an error
                potentialMatch = insertionPoint;
                // if there is a possibility of an id match, scan forward
                // keep track of the potential id match count we are discarding (the
                // newChildPotentialIdCount must be greater than this to make it likely
                // worth it)
                let otherMatchCount = 0;
                while (potentialMatch != null) {

                    // If we have an id match, return the current potential match
                    if (isIdSetMatch(newChild, potentialMatch, ctx)) {
                        return potentialMatch;
                    }

                    // computer the other potential matches of this new content
                    otherMatchCount += getIdIntersectionCount(ctx, potentialMatch, newContent);
                    if (otherMatchCount > newChildPotentialIdCount) {
                        // if we have more potential id matches in _other_ content, we
                        // do not have a good candidate for an id match, so return null
                        return null;
                    }

                    // advanced to the next old content child
                    potentialMatch = potentialMatch.nextSibling;
                }
            }
            return potentialMatch;
        }


        /**
         * =============================================================================
         *  Scans forward from the insertionPoint in the old parent looking for a potential soft match
         *  for the newChild.  We stop if we find a potential soft match for the new child OR
         *  if we find a potential id match in the old parents children OR if we find two
         *  potential soft matches for the next two pieces of new content
         * =============================================================================
         * @param {Node} newContent
         * @param {Node} oldParent
         * @param {Node} newChild
         * @param {Node} insertionPoint
         * @param {MorphContext} ctx
         * @returns {null | Node}
         */
        function findSoftMatch(newContent, oldParent, newChild, insertionPoint, ctx) {

            /**
             * @type {Node | null}
             */
            let potentialSoftMatch = insertionPoint;
            /**
             * @type {Node | null}
             */
            let nextSibling = newChild.nextSibling;
            let siblingSoftMatchCount = 0;

            while (potentialSoftMatch != null) {

                if (getIdIntersectionCount(ctx, potentialSoftMatch, newContent) > 0) {
                    // the current potential soft match has a potential id set match with the remaining new
                    // content so bail out of looking
                    return null;
                }

                // if we have a soft match with the current node, return it
                if (isSoftMatch(newChild, potentialSoftMatch)) {
                    return potentialSoftMatch;
                }

                if (isSoftMatch(nextSibling, potentialSoftMatch)) {
                    // the next new node has a soft match with this node, so
                    // increment the count of future soft matches
                    siblingSoftMatchCount++;
                    // ok to cast: if it was null it couldn't be a soft match
                    nextSibling = /** @type {Node} */ (nextSibling).nextSibling;

                    // If there are two future soft matches, bail to allow the siblings to soft match
                    // so that we don't consume future soft matches for the sake of the current node
                    if (siblingSoftMatchCount >= 2) {
                        return null;
                    }
                }

                // advanced to the next old content child
                potentialSoftMatch = potentialSoftMatch.nextSibling;
            }

            return potentialSoftMatch;
        }

        /** @type {WeakSet<Node>} */
        const generatedByIdiomorph = new WeakSet();

        /**
         *
         * @param {string} newContent
         * @returns {Node | null | DocumentFragment}
         */
        function parseContent(newContent) {
            let parser = new DOMParser();

            // remove svgs to avoid false-positive matches on head, etc.
            let contentWithSvgsRemoved = newContent.replace(/<svg(\s[^>]*>|>)([\s\S]*?)<\/svg>/gim, '');

            // if the newContent contains a html, head or body tag, we can simply parse it w/o wrapping
            if (contentWithSvgsRemoved.match(/<\/html>/) || contentWithSvgsRemoved.match(/<\/head>/) || contentWithSvgsRemoved.match(/<\/body>/)) {
                let content = parser.parseFromString(newContent, "text/html");
                // if it is a full HTML document, return the document itself as the parent container
                if (contentWithSvgsRemoved.match(/<\/html>/)) {
                    generatedByIdiomorph.add(content);
                    return content;
                } else {
                    // otherwise return the html element as the parent container
                    let htmlElement = content.firstChild;
                    if (htmlElement) {
                        generatedByIdiomorph.add(htmlElement);
                        return htmlElement;
                    } else {
                        return null;
                    }
                }
            } else {
                // if it is partial HTML, wrap it in a template tag to provide a parent element and also to help
                // deal with touchy tags like tr, tbody, etc.
                let responseDoc = parser.parseFromString("<body><template>" + newContent + "</template></body>", "text/html");
                let content = /** @type {HTMLTemplateElement} */ (responseDoc.body.querySelector('template')).content;
                generatedByIdiomorph.add(content);
                return content
            }
        }

        /**
         *
         * @param {null | Node | HTMLCollection | Node[] | Document & {generatedByIdiomorph:boolean}} newContent
         * @returns {Element}
         */
        function normalizeContent(newContent) {
            if (newContent == null) {
                // noinspection UnnecessaryLocalVariableJS
                const dummyParent = document.createElement('div');
                return dummyParent;
            } else if (generatedByIdiomorph.has(/** @type {Element} */ (newContent))) {
                // the template tag created by idiomorph parsing can serve as a dummy parent
                return /** @type {Element} */ (newContent);
            } else if (newContent instanceof Node) {
                // a single node is added as a child to a dummy parent
                const dummyParent = document.createElement('div');
                dummyParent.append(newContent);
                return dummyParent;
            } else {
                // all nodes in the array or HTMLElement collection are consolidated under
                // a single dummy parent element
                const dummyParent = document.createElement('div');
                for (const elt of [...newContent]) {
                    dummyParent.append(elt);
                }
                return dummyParent;
            }
        }

        /**
         *
         * @param {Node | null} previousSibling
         * @param {Node} morphedNode
         * @param {Node | null} nextSibling
         * @returns {Node[]}
         */
        function insertSiblings(previousSibling, morphedNode, nextSibling) {
            /**
             * @type {Node[]}
             */
            let stack = []
            /**
             * @type {Node[]}
             */
            let added = []
            while (previousSibling != null) {
                stack.push(previousSibling);
                previousSibling = previousSibling.previousSibling;
            }
            // Base the loop on the node variable, so that you do not need runtime checks for
            // undefined value inside the loop
            let node = stack.pop();
            while (node !== undefined) {
                added.push(node); // push added preceding siblings on in order and insert
                morphedNode.parentElement?.insertBefore(node, morphedNode);
                node = stack.pop();
            }
            added.push(morphedNode);
            while (nextSibling != null) {
                stack.push(nextSibling);
                added.push(nextSibling); // here we are going in order, so push on as we scan, rather than add
                nextSibling = nextSibling.nextSibling;
            }
            while (stack.length > 0) {
                const node = /** @type {Node} */ (stack.pop());
                morphedNode.parentElement?.insertBefore(node, morphedNode.nextSibling);
            }
            return added;
        }

        /**
         *
         * @param {Element} newContent
         * @param {Element} oldNode
         * @param {MorphContext} ctx
         * @returns {Node | null}
         */
        function findBestNodeMatch(newContent, oldNode, ctx) {
            /**
             * @type {Node | null}
             */
            let currentElement;
            currentElement = newContent.firstChild;
            /**
             * @type {Node | null}
             */
            let bestElement = currentElement;
            let score = 0;
            while (currentElement) {
                let newScore = scoreElement(currentElement, oldNode, ctx);
                if (newScore > score) {
                    bestElement = currentElement;
                    score = newScore;
                }
                currentElement = currentElement.nextSibling;
            }
            return bestElement;
        }

        /**
         *
         * @param {Node | null} node1
         * @param {Element} node2
         * @param {MorphContext} ctx
         * @returns {number}
         */
        // TODO: The function handles node1 and node2 as if they are Elements but the function is
        //   called in places where node1 and node2 may be just Nodes, not Elements
        function scoreElement(node1, node2, ctx) {
            if (isSoftMatch(node1, node2)) {
                // ok to cast: isSoftMatch performs a null check
                return .5 + getIdIntersectionCount(ctx, /** @type {Node} */ (node1), node2);
            }
            return 0;
        }

        /**
         *
         * @param {Node} tempNode
         * @param {MorphContext} ctx
         */
        // TODO: The function handles tempNode as if it's Element but the function is called in
        //   places where tempNode may be just a Node, not an Element
        function removeNode(tempNode, ctx) {
            removeIdsFromConsideration(ctx, tempNode)
            if (ctx.callbacks.beforeNodeRemoved(tempNode) === false) return;

            tempNode.parentNode?.removeChild(tempNode);
            ctx.callbacks.afterNodeRemoved(tempNode);
        }

        //=============================================================================
        // ID Set Functions
        //=============================================================================

        /**
         *
         * @param {MorphContext} ctx
         * @param {string} id
         * @returns {boolean}
         */
        function isIdInConsideration(ctx, id) {
            return !ctx.deadIds.has(id);
        }

        /**
         *
         * @param {MorphContext} ctx
         * @param {string} id
         * @param {Node} targetNode
         * @returns {boolean}
         */
        function idIsWithinNode(ctx, id, targetNode) {
            let idSet = ctx.idMap.get(targetNode) || EMPTY_SET;
            return idSet.has(id);
        }

        /**
         *
         * @param {MorphContext} ctx
         * @param {Node} node
         * @returns {void}
         */
        function removeIdsFromConsideration(ctx, node) {
            let idSet = ctx.idMap.get(node) || EMPTY_SET;
            for (const id of idSet) {
                ctx.deadIds.add(id);
            }
        }

        /**
         *
         * @param {MorphContext} ctx
         * @param {Node} node1
         * @param {Node} node2
         * @returns {number}
         */
        function getIdIntersectionCount(ctx, node1, node2) {
            let sourceSet = ctx.idMap.get(node1) || EMPTY_SET;
            let matchCount = 0;
            for (const id of sourceSet) {
                // a potential match is an id in the source and potentialIdsSet, but
                // that has not already been merged into the DOM
                if (isIdInConsideration(ctx, id) && idIsWithinNode(ctx, id, node2)) {
                    ++matchCount;
                }
            }
            return matchCount;
        }

        /**
         * A bottom up algorithm that finds all elements with ids inside of the node
         * argument and populates id sets for those nodes and all their parents, generating
         * a set of ids contained within all nodes for the entire hierarchy in the DOM
         *
         * @param {Element} node
         * @param {Map<Node, Set<string>>} idMap
         */
        function populateIdMapForNode(node, idMap) {
            let nodeParent = node.parentElement;
            // find all elements with an id property
            let idElements = node.querySelectorAll('[id]');
            for (const elt of idElements) {
                /**
                 * @type {Element|null}
                 */
                let current = elt;
                // walk up the parent hierarchy of that element, adding the id
                // of element to the parent's id set
                while (current !== nodeParent && current != null) {
                    let idSet = idMap.get(current);
                    // if the id set doesn't exist, create it and insert it in the  map
                    if (idSet == null) {
                        idSet = new Set();
                        idMap.set(current, idSet);
                    }
                    idSet.add(elt.id);
                    current = current.parentElement;
                }
            }
        }

        /**
         * This function computes a map of nodes to all ids contained within that node (inclusive of the
         * node).  This map can be used to ask if two nodes have intersecting sets of ids, which allows
         * for a looser definition of "matching" than tradition id matching, and allows child nodes
         * to contribute to a parent nodes matching.
         *
         * @param {Element} oldContent  the old content that will be morphed
         * @param {Element} newContent  the new content to morph to
         * @returns {Map<Node, Set<string>>} a map of nodes to id sets for the
         */
        function createIdMap(oldContent, newContent) {
            /**
             *
             * @type {Map<Node, Set<string>>}
             */
            let idMap = new Map();
            populateIdMapForNode(oldContent, idMap);
            populateIdMapForNode(newContent, idMap);
            return idMap;
        }

        //=============================================================================
        // This is what ends up becoming the Idiomorph global object
        //=============================================================================
        return {
            morph,
            defaults
        }
    })();

                
                /**
 * @typedef {object} ConfigHead
 *
 * @property {'merge' | 'append' | 'morph' | 'none'} [style]
 * @property {boolean} [block]
 * @property {boolean} [ignore]
 * @property {function(Element): boolean} [shouldPreserve]
 * @property {function(Element): boolean} [shouldReAppend]
 * @property {function(Element): boolean} [shouldRemove]
 * @property {function(Element, {added: Node[], kept: Element[], removed: Element[]}): void} [afterHeadMorphed]
 */

/**
 * @typedef {object} ConfigCallbacks
 *
 * @property {function(Node): boolean} [beforeNodeAdded]
 * @property {function(Node): void} [afterNodeAdded]
 * @property {function(Element, Node): boolean} [beforeNodeMorphed]
 * @property {function(Element, Node): void} [afterNodeMorphed]
 * @property {function(Element): boolean} [beforeNodeRemoved]
 * @property {function(Element): void} [afterNodeRemoved]
 * @property {function(string, Element, "update" | "remove"): boolean} [beforeAttributeUpdated]
 */

/**
 * @typedef {object} Config
 *
 * @property {'outerHTML' | 'innerHTML'} [morphStyle]
 * @property {boolean} [ignoreActive]
 * @property {boolean} [ignoreActiveValue]
 * @property {ConfigCallbacks} [callbacks]
 * @property {ConfigHead} [head]
 */

/**
 * @typedef {function} NoOp
 *
 * @returns {void}
 */

/**
 * @typedef {object} ConfigHeadInternal
 *
 * @property {'merge' | 'append' | 'morph' | 'none'} style
 * @property {boolean} [block]
 * @property {boolean} [ignore]
 * @property {(function(Element): boolean) | NoOp} shouldPreserve
 * @property {(function(Element): boolean) | NoOp} shouldReAppend
 * @property {(function(Element): boolean) | NoOp} shouldRemove
 * @property {(function(Element, {added: Node[], kept: Element[], removed: Element[]}): void) | NoOp} afterHeadMorphed
 */

/**
 * @typedef {object} ConfigCallbacksInternal
 *
 * @property {(function(Node): boolean) | NoOp} beforeNodeAdded
 * @property {(function(Node): void) | NoOp} afterNodeAdded
 * @property {(function(Node, Node): boolean) | NoOp} beforeNodeMorphed
 * @property {(function(Node, Node): void) | NoOp} afterNodeMorphed
 * @property {(function(Node): boolean) | NoOp} beforeNodeRemoved
 * @property {(function(Node): void) | NoOp} afterNodeRemoved
 * @property {(function(string, Element, "update" | "remove"): boolean) | NoOp} beforeAttributeUpdated
 */

/**
 * @typedef {object} ConfigInternal
 *
 * @property {'outerHTML' | 'innerHTML'} morphStyle
 * @property {boolean} [ignoreActive]
 * @property {boolean} [ignoreActiveValue]
 * @property {ConfigCallbacksInternal} callbacks
 * @property {ConfigHeadInternal} head
 */

/**
 * @typedef {Function} Morph
 *
 * @param {Element | Document} oldNode
 * @param {Element | Node | HTMLCollection | Node[] | string | null} newContent
 * @param {Config} [config]
 * @returns {undefined | HTMLCollection | Node[]}
 */

// base IIFE to define idiomorph
/**
 *
 * @type {{defaults: ConfigInternal, morph: Morph}}
 */
window.Idiomorph.original = (function () {
        'use strict';

        /**
         * @typedef {object} MorphContext
         *
         * @property {Node} target
         * @property {Node} newContent
         * @property {ConfigInternal} config
         * @property {ConfigInternal['morphStyle']} morphStyle
         * @property {ConfigInternal['ignoreActive']} ignoreActive
         * @property {ConfigInternal['ignoreActiveValue']} ignoreActiveValue
         * @property {Map<Node, Set<string>>} idMap
         * @property {Set<string>} deadIds
         * @property {ConfigInternal['callbacks']} callbacks
         * @property {ConfigInternal['head']} head
         */

        //=============================================================================
        // AND NOW IT BEGINS...
        //=============================================================================

        /**
         *
         * @type {Set<string>}
         */
        let EMPTY_SET = new Set();

        /**
         * Default configuration values, updatable by users now
         * @type {ConfigInternal}
         */
        let defaults = {
            morphStyle: "outerHTML",
            callbacks : {
                beforeNodeAdded: noOp,
                afterNodeAdded: noOp,
                beforeNodeMorphed: noOp,
                afterNodeMorphed: noOp,
                beforeNodeRemoved: noOp,
                afterNodeRemoved: noOp,
                beforeAttributeUpdated: noOp,

            },
            head: {
                style: 'merge',
                shouldPreserve: function (elt) {
                    return elt.getAttribute("im-preserve") === "true";
                },
                shouldReAppend: function (elt) {
                    return elt.getAttribute("im-re-append") === "true";
                },
                shouldRemove: noOp,
                afterHeadMorphed: noOp,
            }
        };


        /**
         * =============================================================================
         * Core Morphing Algorithm - morph, morphNormalizedContent, morphOldNodeTo, morphChildren
         * =============================================================================
         *
         * @param {Element | Document} oldNode
         * @param {Element | Node | HTMLCollection | Node[] | string | null} newContent
         * @param {Config} [config]
         * @returns {undefined | HTMLCollection | Node[]}
         */
        function morph(oldNode, newContent, config = {}) {

            if (oldNode instanceof Document) {
                oldNode = oldNode.documentElement;
            }

            if (typeof newContent === 'string') {
                newContent = parseContent(newContent);
            }

            let normalizedContent = normalizeContent(newContent);

            let ctx = createMorphContext(oldNode, normalizedContent, config);

            return morphNormalizedContent(oldNode, normalizedContent, ctx);
        }

        /**
         *
         * @param {Element} oldNode
         * @param {Element} normalizedNewContent
         * @param {MorphContext} ctx
         * @returns {undefined | HTMLCollection| Node[]}
         */
        function morphNormalizedContent(oldNode, normalizedNewContent, ctx) {
            if (ctx.head.block) {
                let oldHead = oldNode.querySelector('head');
                let newHead = normalizedNewContent.querySelector('head');
                if (oldHead && newHead) {
                    let promises = handleHeadElement(newHead, oldHead, ctx);
                    // when head promises resolve, call morph again, ignoring the head tag
                    Promise.all(promises).then(function () {
                        morphNormalizedContent(oldNode, normalizedNewContent, Object.assign(ctx, {
                            head: {
                                block: false,
                                ignore: true
                            }
                        }));
                    });
                    return;
                }
            }

            if (ctx.morphStyle === "innerHTML") {

                // innerHTML, so we are only updating the children
                morphChildren(normalizedNewContent, oldNode, ctx);
                return Array.from(oldNode.children);

            } else if (ctx.morphStyle === "outerHTML" || ctx.morphStyle == null) {
                // otherwise find the best element match in the new content, morph that, and merge its siblings
                // into either side of the best match
                let bestMatch = findBestNodeMatch(normalizedNewContent, oldNode, ctx);

                // stash the siblings that will need to be inserted on either side of the best match
                let previousSibling = bestMatch?.previousSibling ?? null;
                let nextSibling = bestMatch?.nextSibling ?? null;

                // morph it
                let morphedNode = morphOldNodeTo(oldNode, bestMatch, ctx);

                if (bestMatch) {
                    // if there was a best match, merge the siblings in too and return the
                    // whole bunch
                    if (morphedNode) {
                        return insertSiblings(previousSibling, morphedNode, nextSibling);
                    }
                } else {
                    // otherwise nothing was added to the DOM
                    return []
                }
            } else {
                throw "Do not understand how to morph style " + ctx.morphStyle;
            }
        }


        /**
         * @param {Node} possibleActiveElement
         * @param {MorphContext} ctx
         * @returns {boolean}
         */
        // TODO: ignoreActive and ignoreActiveValue are marked as optional since they are not
        //   initialised in the default config object. As a result the && in the function body may
        //   return undefined instead of boolean. Either expand the type of the return value to
        //   include undefined or wrap the ctx.ignoreActiveValue into a Boolean()
        function ignoreValueOfActiveElement(possibleActiveElement, ctx) {
            return !!ctx.ignoreActiveValue && possibleActiveElement === document.activeElement && possibleActiveElement !== document.body;
        }

        /**
         * @param {Node} oldNode root node to merge content into
         * @param {Node | null} newContent new content to merge
         * @param {MorphContext} ctx the merge context
         * @returns {Node | null} the element that ended up in the DOM
         */
        function morphOldNodeTo(oldNode, newContent, ctx) {
            if (ctx.ignoreActive && oldNode === document.activeElement) {
                // don't morph focused element
            } else if (newContent == null) {
                if (ctx.callbacks.beforeNodeRemoved(oldNode) === false) return oldNode;

                oldNode.parentNode?.removeChild(oldNode);
                ctx.callbacks.afterNodeRemoved(oldNode);
                return null;
            } else if (!isSoftMatch(oldNode, newContent)) {
                if (ctx.callbacks.beforeNodeRemoved(oldNode) === false) return oldNode;
                if (ctx.callbacks.beforeNodeAdded(newContent) === false) return oldNode;

                oldNode.parentNode?.replaceChild(newContent, oldNode);
                ctx.callbacks.afterNodeAdded(newContent);
                ctx.callbacks.afterNodeRemoved(oldNode);
                return newContent;
            } else {
                if (ctx.callbacks.beforeNodeMorphed(oldNode, newContent) === false) return oldNode;

                if (oldNode instanceof HTMLHeadElement && ctx.head.ignore) {
                    // ignore the head element
                } else if (oldNode instanceof HTMLHeadElement && ctx.head.style !== "morph") {
                    // ok to cast: if newContent wasn't also a <head>, it would've got caught in the `!isSoftMatch` branch above
                    handleHeadElement(/** @type {HTMLHeadElement} */ (newContent), oldNode, ctx);
                } else {
                    syncNodeFrom(newContent, oldNode, ctx);
                    if (!ignoreValueOfActiveElement(oldNode, ctx)) {
                        morphChildren(newContent, oldNode, ctx);
                    }
                }
                ctx.callbacks.afterNodeMorphed(oldNode, newContent);
                return oldNode;
            }
            return null;
        }

        /**
         * This is the core algorithm for matching up children.  The idea is to use id sets to try to match up
         * nodes as faithfully as possible.  We greedily match, which allows us to keep the algorithm fast, but
         * by using id sets, we are able to better match up with content deeper in the DOM.
         *
         * Basic algorithm is, for each node in the new content:
         *
         * - if we have reached the end of the old parent, append the new content
         * - if the new content has an id set match with the current insertion point, morph
         * - search for an id set match
         * - if id set match found, morph
         * - otherwise search for a "soft" match
         * - if a soft match is found, morph
         * - otherwise, prepend the new node before the current insertion point
         *
         * The two search algorithms terminate if competing node matches appear to outweigh what can be achieved
         * with the current node.  See findIdSetMatch() and findSoftMatch() for details.
         *
         * @param {Node} newParent the parent element of the new content
         * @param {Node} oldParent the old content that we are merging the new content into
         * @param {MorphContext} ctx the merge context
         * @returns {void}
         */
        function morphChildren(newParent, oldParent, ctx) {
            if (newParent instanceof HTMLTemplateElement && oldParent instanceof HTMLTemplateElement) {
              newParent = newParent.content;
              oldParent = oldParent.content;
            }

            /**
             *
             * @type {Node | null}
             */
            let nextNewChild = newParent.firstChild;
            /**
             *
             * @type {Node | null}
             */
            let insertionPoint = oldParent.firstChild;
            let newChild;

            // run through all the new content
            while (nextNewChild) {

                newChild = nextNewChild;
                nextNewChild = newChild.nextSibling;

                // if we are at the end of the exiting parent's children, just append
                if (insertionPoint == null) {
                    if (ctx.callbacks.beforeNodeAdded(newChild) === false) continue;

                    oldParent.appendChild(newChild);
                    ctx.callbacks.afterNodeAdded(newChild);
                    removeIdsFromConsideration(ctx, newChild);
                    continue;
                }

                // if the current node has an id set match then morph
                if (isIdSetMatch(newChild, insertionPoint, ctx)) {
                    morphOldNodeTo(insertionPoint, newChild, ctx);
                    insertionPoint = insertionPoint.nextSibling;
                    removeIdsFromConsideration(ctx, newChild);
                    continue;
                }

                // otherwise search forward in the existing old children for an id set match
                let idSetMatch = findIdSetMatch(newParent, oldParent, newChild, insertionPoint, ctx);

                // if we found a potential match, remove the nodes until that point and morph
                if (idSetMatch) {
                    insertionPoint = removeNodesBetween(insertionPoint, idSetMatch, ctx);
                    morphOldNodeTo(idSetMatch, newChild, ctx);
                    removeIdsFromConsideration(ctx, newChild);
                    continue;
                }

                // no id set match found, so scan forward for a soft match for the current node
                let softMatch = findSoftMatch(newParent, oldParent, newChild, insertionPoint, ctx);

                // if we found a soft match for the current node, morph
                if (softMatch) {
                    insertionPoint = removeNodesBetween(insertionPoint, softMatch, ctx);
                    morphOldNodeTo(softMatch, newChild, ctx);
                    removeIdsFromConsideration(ctx, newChild);
                    continue;
                }

                // abandon all hope of morphing, just insert the new child before the insertion point
                // and move on
                if (ctx.callbacks.beforeNodeAdded(newChild) === false) continue;

                oldParent.insertBefore(newChild, insertionPoint);
                ctx.callbacks.afterNodeAdded(newChild);
                removeIdsFromConsideration(ctx, newChild);
            }

            // remove any remaining old nodes that didn't match up with new content
            while (insertionPoint !== null) {

                let tempNode = insertionPoint;
                insertionPoint = insertionPoint.nextSibling;
                removeNode(tempNode, ctx);
            }
        }

        //=============================================================================
        // Attribute Syncing Code
        //=============================================================================

        /**
         * @param {string} attr the attribute to be mutated
         * @param {Element} to the element that is going to be updated
         * @param {"update" | "remove"} updateType
         * @param {MorphContext} ctx the merge context
         * @returns {boolean} true if the attribute should be ignored, false otherwise
         */
        function ignoreAttribute(attr, to, updateType, ctx) {
            if(attr === 'value' && ctx.ignoreActiveValue && to === document.activeElement){
                return true;
            }
            return ctx.callbacks.beforeAttributeUpdated(attr, to, updateType) === false;
        }

        /**
         * syncs a given node with another node, copying over all attributes and
         * inner element state from the 'from' node to the 'to' node
         *
         * @param {Node} from the element to copy attributes & state from
         * @param {Node} to the element to copy attributes & state to
         * @param {MorphContext} ctx the merge context
         */
        function syncNodeFrom(from, to, ctx) {
            let type = from.nodeType

            // if is an element type, sync the attributes from the
            // new node into the new node
            if (type === 1 /* element type */) {
                const fromEl = /** @type {Element} */ (from);
                const toEl = /** @type {Element} */ (to);
                const fromAttributes = fromEl.attributes;
                const toAttributes = toEl.attributes;
                for (const fromAttribute of fromAttributes) {
                    if (ignoreAttribute(fromAttribute.name, toEl, 'update', ctx)) {
                        continue;
                    }
                    if (toEl.getAttribute(fromAttribute.name) !== fromAttribute.value) {
                        toEl.setAttribute(fromAttribute.name, fromAttribute.value);
                    }
                }
                // iterate backwards to avoid skipping over items when a delete occurs
                for (let i = toAttributes.length - 1; 0 <= i; i--) {
                    const toAttribute = toAttributes[i];
                    if (!fromEl.hasAttribute(toAttribute.name)) {
                        if (ignoreAttribute(toAttribute.name, toEl, 'remove', ctx)) {
                            continue;
                        }
                        toEl.removeAttribute(toAttribute.name);
                    }
                }
            }

            // sync text nodes
            if (type === 8 /* comment */ || type === 3 /* text */) {
                if (to.nodeValue !== from.nodeValue) {
                    to.nodeValue = from.nodeValue;
                }
            }

            if (!ignoreValueOfActiveElement(to, ctx)) {
                // sync input values
                syncInputValue(from, to, ctx);
            }
        }

        /**
         * @param {Element} from element to sync the value from
         * @param {Element} to element to sync the value to
         * @param {string} attributeName the attribute name
         * @param {MorphContext} ctx the merge context
         */
        function syncBooleanAttribute(from, to, attributeName, ctx) {
            // TODO: prefer set/getAttribute here
            if (!(from instanceof Element && to instanceof Element)) return
            // @ts-ignore this function is only used on boolean attrs that are reflected as dom properties
            const fromLiveValue = from[attributeName], toLiveValue = to[attributeName];
            if (fromLiveValue !== toLiveValue) {
                let ignoreUpdate = ignoreAttribute(attributeName, to, 'update', ctx);
                if (!ignoreUpdate) {
                  // update attribute's associated DOM property
                  // @ts-ignore this function is only used on boolean attrs that are reflected as dom properties
                  to[attributeName] = from[attributeName];
                }
                if (fromLiveValue) {
                    if (!ignoreUpdate) {
                        // TODO: do we really want this? tests say so but it feels wrong
                        to.setAttribute(attributeName, fromLiveValue);
                    }
                } else {
                    if (!ignoreAttribute(attributeName, to, 'remove', ctx)) {
                        to.removeAttribute(attributeName);
                    }
                }
            }
        }

        /**
         * NB: many bothans died to bring us information:
         *
         *  https://github.com/patrick-steele-idem/morphdom/blob/master/src/specialElHandlers.js
         *  https://github.com/choojs/nanomorph/blob/master/lib/morph.jsL113
         *
         * @param {Node} from the element to sync the input value from
         * @param {Node} to the element to sync the input value to
         * @param {MorphContext} ctx the merge context
         */
        function syncInputValue(from, to, ctx) {
            if (from instanceof HTMLInputElement &&
                to instanceof HTMLInputElement &&
                from.type !== 'file') {

                let fromValue = from.value;
                let toValue = to.value;

                // sync boolean attributes
                syncBooleanAttribute(from, to, 'checked', ctx);
                syncBooleanAttribute(from, to, 'disabled', ctx);

                if (!from.hasAttribute('value')) {
                    if (!ignoreAttribute('value', to, 'remove', ctx)) {
                        to.value = '';
                        to.removeAttribute('value');
                    }
                } else if (fromValue !== toValue) {
                    if (!ignoreAttribute('value', to, 'update', ctx)) {
                        to.setAttribute('value', fromValue);
                        to.value = fromValue;
                    }
                }
            // TODO: QUESTION(1cg): this used to only check `from` unlike the other branches -- why?
            // did I break something?
            } else if (from instanceof HTMLOptionElement && to instanceof HTMLOptionElement) {
                syncBooleanAttribute(from, to, 'selected', ctx)
            } else if (from instanceof HTMLTextAreaElement && to instanceof HTMLTextAreaElement) {
                let fromValue = from.value;
                let toValue = to.value;
                if (ignoreAttribute('value', to, 'update', ctx)) {
                    return;
                }
                if (fromValue !== toValue) {
                    to.value = fromValue;
                }
                if (to.firstChild && to.firstChild.nodeValue !== fromValue) {
                    to.firstChild.nodeValue = fromValue
                }
            }
        }


        /**
         * =============================================================================
         *  The HEAD tag can be handled specially, either w/ a 'merge' or 'append' style
         * =============================================================================
         * @param {Element} newHeadTag
         * @param {Element} currentHead
         * @param {MorphContext} ctx
         * @returns {Promise<void>[]}
         */
        function handleHeadElement(newHeadTag, currentHead, ctx) {
            /**
             * @type {Node[]}
             */
            let added = []
            /**
             * @type {Element[]}
             */
            let removed = []
            /**
             * @type {Element[]}
             */
            let preserved = []
            /**
             * @type {Element[]}
             */
            let nodesToAppend = []

            let headMergeStyle = ctx.head.style;

            // put all new head elements into a Map, by their outerHTML
            let srcToNewHeadNodes = new Map();
            for (const newHeadChild of newHeadTag.children) {
                srcToNewHeadNodes.set(newHeadChild.outerHTML, newHeadChild);
            }

            // for each elt in the current head
            for (const currentHeadElt of currentHead.children) {

                // If the current head element is in the map
                let inNewContent = srcToNewHeadNodes.has(currentHeadElt.outerHTML);
                let isReAppended = ctx.head.shouldReAppend(currentHeadElt);
                let isPreserved = ctx.head.shouldPreserve(currentHeadElt);
                if (inNewContent || isPreserved) {
                    if (isReAppended) {
                        // remove the current version and let the new version replace it and re-execute
                        removed.push(currentHeadElt);
                    } else {
                        // this element already exists and should not be re-appended, so remove it from
                        // the new content map, preserving it in the DOM
                        srcToNewHeadNodes.delete(currentHeadElt.outerHTML);
                        preserved.push(currentHeadElt);
                    }
                } else {
                    if (headMergeStyle === "append") {
                        // we are appending and this existing element is not new content
                        // so if and only if it is marked for re-append do we do anything
                        if (isReAppended) {
                            removed.push(currentHeadElt);
                            nodesToAppend.push(currentHeadElt);
                        }
                    } else {
                        // if this is a merge, we remove this content since it is not in the new head
                        if (ctx.head.shouldRemove(currentHeadElt) !== false) {
                            removed.push(currentHeadElt);
                        }
                    }
                }
            }

            // Push the remaining new head elements in the Map into the
            // nodes to append to the head tag
            nodesToAppend.push(...srcToNewHeadNodes.values());
            log("to append: ", nodesToAppend);

            let promises = [];
            for (const newNode of nodesToAppend) {
                log("adding: ", newNode);
                // TODO: This could theoretically be null, based on type
                let newElt = /** @type {ChildNode} */ (
                  document.createRange().createContextualFragment(newNode.outerHTML).firstChild);
                log(newElt);
                if (ctx.callbacks.beforeNodeAdded(newElt) !== false) {
                    if (('href' in newElt && newElt.href) || ('src' in newElt && newElt.src)) {
                        /** @type {(result?: any) => void} */ let resolve;
                        let promise = new Promise(function (_resolve) {
                            resolve = _resolve;
                        });
                        newElt.addEventListener('load', function () {
                            resolve();
                        });
                        promises.push(promise);
                    }
                    currentHead.appendChild(newElt);
                    ctx.callbacks.afterNodeAdded(newElt);
                    added.push(newElt);
                }
            }

            // remove all removed elements, after we have appended the new elements to avoid
            // additional network requests for things like style sheets
            for (const removedElement of removed) {
                if (ctx.callbacks.beforeNodeRemoved(removedElement) !== false) {
                    currentHead.removeChild(removedElement);
                    ctx.callbacks.afterNodeRemoved(removedElement);
                }
            }

            ctx.head.afterHeadMorphed(currentHead, {added: added, kept: preserved, removed: removed});
            return promises;
        }

        //=============================================================================
        // Misc
        //=============================================================================

        /**
         * @param {any[]} _args
         */
        function log(..._args) {
            //console.log(args);
        }

        function noOp() {
        }


        /**
         * Deep merges the config object and the Idiomoroph.defaults object to
         * produce a final configuration object
         * @param {Config} config
         * @returns {ConfigInternal}
         */
        function mergeDefaults(config) {
            /**
             * @type {ConfigInternal}
             */
            let finalConfig= Object.assign({}, defaults);

            // copy top level stuff into final config
            Object.assign(finalConfig, config);

            // copy callbacks into final config (do this to deep merge the callbacks)
            finalConfig.callbacks = Object.assign({}, defaults.callbacks, config.callbacks);

            // copy head config into final config  (do this to deep merge the head)
            finalConfig.head = Object.assign({}, defaults.head, config.head);

            return finalConfig;
        }

        /**
         *
         * @param {Element} oldNode
         * @param {Element} newContent
         * @param {Config} config
         * @returns {MorphContext}
         */
        function createMorphContext(oldNode, newContent, config) {
            const mergedConfig = mergeDefaults(config);
            return {
                target: oldNode,
                newContent: newContent,
                config: mergedConfig,
                morphStyle: mergedConfig.morphStyle,
                ignoreActive: mergedConfig.ignoreActive,
                ignoreActiveValue: mergedConfig.ignoreActiveValue,
                idMap: createIdMap(oldNode, newContent),
                deadIds: new Set(),
                callbacks: mergedConfig.callbacks,
                head: mergedConfig.head
            }
        }

        /**
         *
         * @param {Node | null} node1
         * @param {Node | null} node2
         * @param {MorphContext} ctx
         * @returns {boolean}
         */
        // TODO: The function handles this as if it's Element or null, but the function is called in
        //   places where the arguments may be just a Node, not an Element
        function isIdSetMatch(node1, node2, ctx) {
            if (node1 == null || node2 == null) {
                return false;
            }
            if ((node1 instanceof Element) && (node2 instanceof Element) &&
                    node1.tagName === node2.tagName) {
                if (node1.id !== "" && node1.id === node2.id) {
                    return true;
                } else {
                    return getIdIntersectionCount(ctx, node1, node2) > 0;
                }
            }
            return false;
        }

        /**
         *
         * @param {Node | null} node1
         * @param {Node | null} node2
         * @returns {boolean}
         */
        function isSoftMatch(node1, node2) {
            if (node1 == null || node2 == null) {
                return false;
            }
            return node1.nodeType === node2.nodeType &&
              // ok to cast: if one is not element, `tagName` will be undefined and we'll compare that
              /** @type {Element} */ (node1).tagName === /** @type {Element} */ (node2).tagName
        }

        /**
         *
         * @param {Node} startInclusive
         * @param {Node} endExclusive
         * @param {MorphContext} ctx
         * @returns {Node | null}
         */
        function removeNodesBetween(startInclusive, endExclusive, ctx) {
            /** @type {Node | null} */ let cursor = startInclusive;
            while (cursor !== endExclusive) {
                let tempNode = /** @type {Node} */ (cursor);
                // TODO: Prefer assigning to a new variable here or expand the type of startInclusive
                //  to be Node | null
                cursor = tempNode.nextSibling;
                removeNode(tempNode, ctx);
            }
            removeIdsFromConsideration(ctx, endExclusive);
            return endExclusive.nextSibling;
        }


        /**
         * =============================================================================
         *  Scans forward from the insertionPoint in the old parent looking for a potential id match
         *  for the newChild.  We stop if we find a potential id match for the new child OR
         *  if the number of potential id matches we are discarding is greater than the
         *  potential id matches for the new child
         * =============================================================================
         * @param {Node} newContent
         * @param {Node} oldParent
         * @param {Node} newChild
         * @param {Node} insertionPoint
         * @param {MorphContext} ctx
         * @returns {null | Node}
         */
        function findIdSetMatch(newContent, oldParent, newChild, insertionPoint, ctx) {

            // max id matches we are willing to discard in our search
            let newChildPotentialIdCount = getIdIntersectionCount(ctx, newChild, oldParent);

            /**
             * @type {Node | null}
             */
            let potentialMatch = null;

            // only search forward if there is a possibility of an id match
            if (newChildPotentialIdCount > 0) {

                // TODO: This is ghosting the potentialMatch variable outside of this block.
                //   Probably an error
                potentialMatch = insertionPoint;
                // if there is a possibility of an id match, scan forward
                // keep track of the potential id match count we are discarding (the
                // newChildPotentialIdCount must be greater than this to make it likely
                // worth it)
                let otherMatchCount = 0;
                while (potentialMatch != null) {

                    // If we have an id match, return the current potential match
                    if (isIdSetMatch(newChild, potentialMatch, ctx)) {
                        return potentialMatch;
                    }

                    // computer the other potential matches of this new content
                    otherMatchCount += getIdIntersectionCount(ctx, potentialMatch, newContent);
                    if (otherMatchCount > newChildPotentialIdCount) {
                        // if we have more potential id matches in _other_ content, we
                        // do not have a good candidate for an id match, so return null
                        return null;
                    }

                    // advanced to the next old content child
                    potentialMatch = potentialMatch.nextSibling;
                }
            }
            return potentialMatch;
        }


        /**
         * =============================================================================
         *  Scans forward from the insertionPoint in the old parent looking for a potential soft match
         *  for the newChild.  We stop if we find a potential soft match for the new child OR
         *  if we find a potential id match in the old parents children OR if we find two
         *  potential soft matches for the next two pieces of new content
         * =============================================================================
         * @param {Node} newContent
         * @param {Node} oldParent
         * @param {Node} newChild
         * @param {Node} insertionPoint
         * @param {MorphContext} ctx
         * @returns {null | Node}
         */
        function findSoftMatch(newContent, oldParent, newChild, insertionPoint, ctx) {

            /**
             * @type {Node | null}
             */
            let potentialSoftMatch = insertionPoint;
            /**
             * @type {Node | null}
             */
            let nextSibling = newChild.nextSibling;
            let siblingSoftMatchCount = 0;

            while (potentialSoftMatch != null) {

                if (getIdIntersectionCount(ctx, potentialSoftMatch, newContent) > 0) {
                    // the current potential soft match has a potential id set match with the remaining new
                    // content so bail out of looking
                    return null;
                }

                // if we have a soft match with the current node, return it
                if (isSoftMatch(newChild, potentialSoftMatch)) {
                    return potentialSoftMatch;
                }

                if (isSoftMatch(nextSibling, potentialSoftMatch)) {
                    // the next new node has a soft match with this node, so
                    // increment the count of future soft matches
                    siblingSoftMatchCount++;
                    // ok to cast: if it was null it couldn't be a soft match
                    nextSibling = /** @type {Node} */ (nextSibling).nextSibling;

                    // If there are two future soft matches, bail to allow the siblings to soft match
                    // so that we don't consume future soft matches for the sake of the current node
                    if (siblingSoftMatchCount >= 2) {
                        return null;
                    }
                }

                // advanced to the next old content child
                potentialSoftMatch = potentialSoftMatch.nextSibling;
            }

            return potentialSoftMatch;
        }

        /** @type {WeakSet<Node>} */
        const generatedByIdiomorph = new WeakSet();

        /**
         *
         * @param {string} newContent
         * @returns {Node | null | DocumentFragment}
         */
        function parseContent(newContent) {
            let parser = new DOMParser();

            // remove svgs to avoid false-positive matches on head, etc.
            let contentWithSvgsRemoved = newContent.replace(/<svg(\s[^>]*>|>)([\s\S]*?)<\/svg>/gim, '');

            // if the newContent contains a html, head or body tag, we can simply parse it w/o wrapping
            if (contentWithSvgsRemoved.match(/<\/html>/) || contentWithSvgsRemoved.match(/<\/head>/) || contentWithSvgsRemoved.match(/<\/body>/)) {
                let content = parser.parseFromString(newContent, "text/html");
                // if it is a full HTML document, return the document itself as the parent container
                if (contentWithSvgsRemoved.match(/<\/html>/)) {
                    generatedByIdiomorph.add(content);
                    return content;
                } else {
                    // otherwise return the html element as the parent container
                    let htmlElement = content.firstChild;
                    if (htmlElement) {
                        generatedByIdiomorph.add(htmlElement);
                        return htmlElement;
                    } else {
                        return null;
                    }
                }
            } else {
                // if it is partial HTML, wrap it in a template tag to provide a parent element and also to help
                // deal with touchy tags like tr, tbody, etc.
                let responseDoc = parser.parseFromString("<body><template>" + newContent + "</template></body>", "text/html");
                let content = /** @type {HTMLTemplateElement} */ (responseDoc.body.querySelector('template')).content;
                generatedByIdiomorph.add(content);
                return content
            }
        }

        /**
         *
         * @param {null | Node | HTMLCollection | Node[] | Document & {generatedByIdiomorph:boolean}} newContent
         * @returns {Element}
         */
        function normalizeContent(newContent) {
            if (newContent == null) {
                // noinspection UnnecessaryLocalVariableJS
                const dummyParent = document.createElement('div');
                return dummyParent;
            } else if (generatedByIdiomorph.has(/** @type {Element} */ (newContent))) {
                // the template tag created by idiomorph parsing can serve as a dummy parent
                return /** @type {Element} */ (newContent);
            } else if (newContent instanceof Node) {
                // a single node is added as a child to a dummy parent
                const dummyParent = document.createElement('div');
                dummyParent.append(newContent);
                return dummyParent;
            } else {
                // all nodes in the array or HTMLElement collection are consolidated under
                // a single dummy parent element
                const dummyParent = document.createElement('div');
                for (const elt of [...newContent]) {
                    dummyParent.append(elt);
                }
                return dummyParent;
            }
        }

        /**
         *
         * @param {Node | null} previousSibling
         * @param {Node} morphedNode
         * @param {Node | null} nextSibling
         * @returns {Node[]}
         */
        function insertSiblings(previousSibling, morphedNode, nextSibling) {
            /**
             * @type {Node[]}
             */
            let stack = []
            /**
             * @type {Node[]}
             */
            let added = []
            while (previousSibling != null) {
                stack.push(previousSibling);
                previousSibling = previousSibling.previousSibling;
            }
            // Base the loop on the node variable, so that you do not need runtime checks for
            // undefined value inside the loop
            let node = stack.pop();
            while (node !== undefined) {
                added.push(node); // push added preceding siblings on in order and insert
                morphedNode.parentElement?.insertBefore(node, morphedNode);
                node = stack.pop();
            }
            added.push(morphedNode);
            while (nextSibling != null) {
                stack.push(nextSibling);
                added.push(nextSibling); // here we are going in order, so push on as we scan, rather than add
                nextSibling = nextSibling.nextSibling;
            }
            while (stack.length > 0) {
                const node = /** @type {Node} */ (stack.pop());
                morphedNode.parentElement?.insertBefore(node, morphedNode.nextSibling);
            }
            return added;
        }

        /**
         *
         * @param {Element} newContent
         * @param {Element} oldNode
         * @param {MorphContext} ctx
         * @returns {Node | null}
         */
        function findBestNodeMatch(newContent, oldNode, ctx) {
            /**
             * @type {Node | null}
             */
            let currentElement;
            currentElement = newContent.firstChild;
            /**
             * @type {Node | null}
             */
            let bestElement = currentElement;
            let score = 0;
            while (currentElement) {
                let newScore = scoreElement(currentElement, oldNode, ctx);
                if (newScore > score) {
                    bestElement = currentElement;
                    score = newScore;
                }
                currentElement = currentElement.nextSibling;
            }
            return bestElement;
        }

        /**
         *
         * @param {Node | null} node1
         * @param {Element} node2
         * @param {MorphContext} ctx
         * @returns {number}
         */
        // TODO: The function handles node1 and node2 as if they are Elements but the function is
        //   called in places where node1 and node2 may be just Nodes, not Elements
        function scoreElement(node1, node2, ctx) {
            if (isSoftMatch(node1, node2)) {
                // ok to cast: isSoftMatch performs a null check
                return .5 + getIdIntersectionCount(ctx, /** @type {Node} */ (node1), node2);
            }
            return 0;
        }

        /**
         *
         * @param {Node} tempNode
         * @param {MorphContext} ctx
         */
        // TODO: The function handles tempNode as if it's Element but the function is called in
        //   places where tempNode may be just a Node, not an Element
        function removeNode(tempNode, ctx) {
            removeIdsFromConsideration(ctx, tempNode)
            if (ctx.callbacks.beforeNodeRemoved(tempNode) === false) return;

            tempNode.parentNode?.removeChild(tempNode);
            ctx.callbacks.afterNodeRemoved(tempNode);
        }

        //=============================================================================
        // ID Set Functions
        //=============================================================================

        /**
         *
         * @param {MorphContext} ctx
         * @param {string} id
         * @returns {boolean}
         */
        function isIdInConsideration(ctx, id) {
            return !ctx.deadIds.has(id);
        }

        /**
         *
         * @param {MorphContext} ctx
         * @param {string} id
         * @param {Node} targetNode
         * @returns {boolean}
         */
        function idIsWithinNode(ctx, id, targetNode) {
            let idSet = ctx.idMap.get(targetNode) || EMPTY_SET;
            return idSet.has(id);
        }

        /**
         *
         * @param {MorphContext} ctx
         * @param {Node} node
         * @returns {void}
         */
        function removeIdsFromConsideration(ctx, node) {
            let idSet = ctx.idMap.get(node) || EMPTY_SET;
            for (const id of idSet) {
                ctx.deadIds.add(id);
            }
        }

        /**
         *
         * @param {MorphContext} ctx
         * @param {Node} node1
         * @param {Node} node2
         * @returns {number}
         */
        function getIdIntersectionCount(ctx, node1, node2) {
            let sourceSet = ctx.idMap.get(node1) || EMPTY_SET;
            let matchCount = 0;
            for (const id of sourceSet) {
                // a potential match is an id in the source and potentialIdsSet, but
                // that has not already been merged into the DOM
                if (isIdInConsideration(ctx, id) && idIsWithinNode(ctx, id, node2)) {
                    ++matchCount;
                }
            }
            return matchCount;
        }

        /**
         * A bottom up algorithm that finds all elements with ids inside of the node
         * argument and populates id sets for those nodes and all their parents, generating
         * a set of ids contained within all nodes for the entire hierarchy in the DOM
         *
         * @param {Element} node
         * @param {Map<Node, Set<string>>} idMap
         */
        function populateIdMapForNode(node, idMap) {
            let nodeParent = node.parentElement;
            // find all elements with an id property
            let idElements = node.querySelectorAll('[id]');
            for (const elt of idElements) {
                /**
                 * @type {Element|null}
                 */
                let current = elt;
                // walk up the parent hierarchy of that element, adding the id
                // of element to the parent's id set
                while (current !== nodeParent && current != null) {
                    let idSet = idMap.get(current);
                    // if the id set doesn't exist, create it and insert it in the  map
                    if (idSet == null) {
                        idSet = new Set();
                        idMap.set(current, idSet);
                    }
                    idSet.add(elt.id);
                    current = current.parentElement;
                }
            }
        }

        /**
         * This function computes a map of nodes to all ids contained within that node (inclusive of the
         * node).  This map can be used to ask if two nodes have intersecting sets of ids, which allows
         * for a looser definition of "matching" than tradition id matching, and allows child nodes
         * to contribute to a parent nodes matching.
         *
         * @param {Element} oldContent  the old content that will be morphed
         * @param {Element} newContent  the new content to morph to
         * @returns {Map<Node, Set<string>>} a map of nodes to id sets for the
         */
        function createIdMap(oldContent, newContent) {
            /**
             *
             * @type {Map<Node, Set<string>>}
             */
            let idMap = new Map();
            populateIdMapForNode(oldContent, idMap);
            populateIdMapForNode(newContent, idMap);
            return idMap;
        }

        //=============================================================================
        // This is what ends up becoming the Idiomorph global object
        //=============================================================================
        return {
            morph,
            defaults
        }
    })();
  </script>

Script Preparation code:

const startEl = document.getElementById("start")
const startElHTML = startEl.innerHTML
const endEl = document.getElementById("end")

Tests:

Original
startEl.innerHTML = startElHTML window.Idiomorph.original.morph(startEl, endEl)
With attribute existence check
startEl.innerHTML = startElHTML window.Idiomorph.morph(startEl, endEl)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Original
With attribute existence check

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 days ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser/OS: Firefox 133 on Ubuntu

View result in a separate tab

Test name	Executions per second
Original	286.1 Ops/sec
With attribute existence check	299.3 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 2 days ago):

LLMs can make mistakes. Check important info.

The benchmark defined in the provided JSON compares the performance of two approaches for handling updates to the DOM in a web application. Specifically, the benchmarks test the efficiency of rendering changes using two different morphing strategies by the `Idiomorph` library.

### Overview of the Benchmark

- **Test Name**: 
    - "Original"
    - "With attribute existence check"

### Options Compared
1. **Original Approach**:
   - Command: `startEl.innerHTML = startElHTML; window.Idiomorph.original.morph(startEl, endEl);`
   - This approach uses the `original` morph function from the `Idiomorph` library without any additional checks for attribute existence.

2. **With attribute existence check**:
   - Command: `startEl.innerHTML = startElHTML; window.Idiomorph.morph(startEl, endEl);`
   - This version utilizes the morph function of `Idiomorph` while leveraging checks to see if attributes exist before making DOM updates.

### Pros and Cons of the Approaches:
#### Original Approach
- **Pros**:
  - Simplicity: Directly dumps HTML into the element which is straightforward without additional logic for attribute checks.
  - Might be faster for simple updates since it avoids extra checks.

- **Cons**:
  - Can have inefficient updates if numerous elements are unnecessarily modified.
  - Does not take into account pre-existing attributes, which could lead to issues like losing user state (e.g., form inputs).

#### With Attribute Existence Check
- **Pros**:
  - Improved Performance: By checking if an attribute exists before applying changes, this method avoids unnecessary updates, potentially making it faster when many elements already have the correct state.
  - Better State Management: Ensures that existing attributes and their values are preserved unless they intentionally need to be updated or removed.

- **Cons**:
  - Increased Complexity: Adds additional computation that could slow down the processing if there are a lot of checks.
  - May have minor overhead compared to the original method in executing the checks.

### Additional Considerations:
- **Library Used**: 
  - The `Idiomorph` library focuses on efficiently morphing, or synchronizing DOM changes. It defines methods to intelligently update the DOM based on changes in the application state, including preserving attributes, child nodes, and handling cases where nodes exist or are modified.

- **Special JavaScript Features/Syntax Used**:
  - The benchmark uses `innerHTML` to quickly update the DOM, which is a common JavaScript technique to manipulate HTML. However, this method can lead to re-parsing of the entire inner content, causing potential performance drawbacks.
  - `window.Idiomorph.morph` relies on a morphing mechanism encapsulated in the library that can apply incremental updates, mitigating some issues that could arise from using `innerHTML`.

### Alternative Approaches:
1. **Virtual DOM Libraries**: Such as React or Vue.js, which use a virtual representation of the DOM to batch updates and minimize direct manipulations.
2. **Diffing Libraries**: Like Preact or Inferno, which optimize updates by calculating the necessary changes without needing constant full replacements or attribute checks.
3. **Direct DOM Manipulation**: For cases where heavy and frequent updates are less critical, simpler methods like `appendChild`, `removeChild`, or direct property manipulation can be faster due to reduced overhead but may risk irreparably disrupting state or fragments of the DOM.

In summary, the benchmark effectively highlights the trade-offs between using simplistic direct DOM updates and more sophisticated approaches that include existence checks for attributes, providing insights into the performance characteristics of each strategy in different contexts.

Related benchmarks:

Attribute existence check within NamedNodeMap (version: 1)

Comparing perf of iterating through a NamedNodeMap in syncNodeFrom vs an Array created from said map. In this variant, we only create the array for the element being modified.

Comparing performance of: Original vs With attribute existence check

Created: 2 days ago by: Registered User

Jump to the latest result

Original

With attribute existence check

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 2 days ago):