Run results for: getLimitsFromData optimization

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Before optimization	954.8 Ops/sec
After optimization	757.9 Ops/sec

Script Preparation code:

var LIST_OSCILLATION_STATE = { 6: [6, 7] }
var DATE_KEY = 'dateTime'
var data = []

let id = Math.floor(Math.random() * 5)
let nextIdChange = Math.round(Math.random() * 170 + 30)
for (let i = 0; i < 2000; i++) {
    if (i >= nextIdChange) {
      id = Math.floor(Math.random() * 5)
      nextIdChange = Math.round(Math.random() * 170 + 30)
    }
    const wellDepth = Math.random() * 5000
    const dateTime = new Date(Math.round(Date.now() * Math.random())).toISOString()
    data.push({ dateTime, wellDepth, idFeedRegulator: id, state: id + 4 })
}

var makeLimit = (id, dateTime, depth) => ({
    id,
    dateStart: dateTime,
    dateEnd: dateTime,
    depthStart: depth,
    depthEnd: depth,
})

Tests:

Before optimization
const getLimitsFromData = (data, accessorName) => { if (data.length < 1) return [] const out = [] for (let i = 0; i < data.length; i++) { if (!data[i][accessorName] || !data[i][DATE_KEY]) continue const lastLimit = out?.[out.length - 1] let { [accessorName]: id, [DATE_KEY]: dateTime, wellDepth = null } = data[i] if (accessorName === 'state') for (const [key, states] of Object.entries(LIST_OSCILLATION_STATE)) if (states.includes(id)) id = Number(key) const newDateTime = new Date(dateTime) if (lastLimit && lastLimit.id === id) { lastLimit.dateEnd = newDateTime lastLimit.depthEnd = wellDepth } else { out.push(makeLimit(id, newDateTime, wellDepth)) } } return out } const saubLimitData = getLimitsFromData(data, 'idFeedRegulator') const spinLimitData = getLimitsFromData(data, 'state')
After optimization
const getLimitsFromData = (data, accessorName, parseId) => { if (data.length < 1) return [] const out = [] for (let i = 0; i < data.length; i++) { if (!data || !data[i][accessorName] || !data[i][DATE_KEY]) continue const lastLimit = out[out.length - 1] let { [accessorName]: id, [DATE_KEY]: dateTime, wellDepth = null } = data[i] if (typeof parseId === 'function') id = parseId(id) const newDateTime = new Date(dateTime) if (lastLimit?.id === id) { lastLimit.dateEnd = newDateTime lastLimit.depthEnd = wellDepth continue } out.push(makeLimit(id, newDateTime, wellDepth)) } return out } const saubLimitData = getLimitsFromData(data, 'idFeedRegulator') const spinLimitData = getLimitsFromData(data, 'state', (id) => Number(Object.keys(LIST_OSCILLATION_STATE).find((key) => LIST_OSCILLATION_STATE[key].includes(id)) ?? id))

Run results for: getLimitsFromData optimization

Before optimization

After optimization