Run results for: uuid lib v4 vs math random vs crypto getRandomValues vs crypto randomUUID

Run details:
User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Mobile/15E148 Safari/604.1
Browser: Mobile Safari 17
Operating system: iOS 17.3.1
Device Platform: Mobile
Date tested: 8 months ago
Test name	Executions per second
uuid lib v4	533770.2 Ops/sec
math random	7004849.0 Ops/sec
crypto random values	1193897.2 Ops/sec
crypto uuid	2026843.2 Ops/sec
Script Preparation code:
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See https://github.com/uuidjs/uuid#getrandomvalues-not-supported");return e(n)}var o=/^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;function a(r){return"string"==typeof r&&o.test(r)}for(var i,u,f=[],s=0;s<256;++s)f.push((s+256).toString(16).substr(1));function c(r){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:0,n=(f[r[e+0]]+f[r[e+1]]+f[r[e+2]]+f[r[e+3]]+"-"+f[r[e+4]]+f[r[e+5]]+"-"+f[r[e+6]]+f[r[e+7]]+"-"+f[r[e+8]]+f[r[e+9]]+"-"+f[r[e+10]]+f[r[e+11]]+f[r[e+12]]+f[r[e+13]]+f[r[e+14]]+f[r[e+15]]).toLowerCase();if(!a(n))throw TypeError("Stringified UUID is invalid");return n}var l=0,d=0;function v(r){if(!a(r))throw TypeError("Invalid UUID");var e,n=new Uint8Array(16);return 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e=8*r.length,n=new Uint32Array(h(e)),t=0;t<e;t+=8)n[t>>5]|=(255&r[t/8])<<t%32;return n}(r),8*r.length))}));function I(r,e,n,t){switch(r){case 0:return e&n^~e&t;case 1:return e^n^t;case 2:return e&n^e&t^n&t;case 3:return e^n^t}}function C(r,e){return r<<e|r>>>32-e}var R=p("v5",80,(function(r){var e=[1518500249,1859775393,2400959708,3395469782],n=[1732584193,4023233417,2562383102,271733878,3285377520];if("string"==typeof r){var t=unescape(encodeURIComponent(r));r=[];for(var o=0;o<t.length;++o)r.push(t.charCodeAt(o))}else Array.isArray(r)||(r=Array.prototype.slice.call(r));r.push(128);for(var a=r.length/4+2,i=Math.ceil(a/16),u=new Array(i),f=0;f<i;++f){for(var s=new Uint32Array(16),c=0;c<16;++c)s[c]=r[64*f+4*c]<<24|r[64*f+4*c+1]<<16|r[64*f+4*c+2]<<8|r[64*f+4*c+3];u[f]=s}u[i-1][14]=8*(r.length-1)/Math.pow(2,32),u[i-1][14]=Math.floor(u[i-1][14]),u[i-1][15]=8*(r.length-1)&4294967295;for(var l=0;l<i;++l){for(var d=new Uint32Array(80),v=0;v<16;++v)d[v]=u[l][v];for(var p=16;p<80;++p)d[p]=C(d[p-3]^d[p-8]^d[p-14]^d[p-16],1);for(var h=n[0],y=n[1],g=n[2],m=n[3],w=n[4],b=0;b<80;++b){var A=Math.floor(b/20),U=C(h,5)+I(A,y,g,m)+w+e[A]+d[b]>>>0;w=m,m=g,g=C(y,30)>>>0,y=h,h=U}n[0]=n[0]+h>>>0,n[1]=n[1]+y>>>0,n[2]=n[2]+g>>>0,n[3]=n[3]+m>>>0,n[4]=n[4]+w>>>0}return[n[0]>>24&255,n[0]>>16&255,n[0]>>8&255,255&n[0],n[1]>>24&255,n[1]>>16&255,n[1]>>8&255,255&n[1],n[2]>>24&255,n[2]>>16&255,n[2]>>8&255,255&n[2],n[3]>>24&255,n[3]>>16&255,n[3]>>8&255,255&n[3],n[4]>>24&255,n[4]>>16&255,n[4]>>8&255,255&n[4]]}));r.NIL="00000000-0000-0000-0000-000000000000",r.parse=v,r.stringify=c,r.v1=function(r,e,n){var o=e&&n||0,a=e||new Array(16),f=(r=r||{}).node||i,s=void 0!==r.clockseq?r.clockseq:u;if(null==f||null==s){var v=r.random||(r.rng||t)();null==f&&(f=i=[1|v[0],v[1],v[2],v[3],v[4],v[5]]),null==s&&(s=u=16383&(v[6]<<8|v[7]))}var p=void 0!==r.msecs?r.msecs:Date.now(),h=void 0!==r.nsecs?r.nsecs:d+1,y=p-l+(h-d)/1e4;if(y<0&&void 0===r.clockseq&&(s=s+1&16383),(y<0||p>l)&&void 0===r.nsecs&&(h=0),h>=1e4)throw new Error("uuid.v1(): Can't create more than 10M uuids/sec");l=p,d=h,u=s;var g=(1e4*(268435455&(p+=122192928e5))+h)%4294967296;a[o++]=g>>>24&255,a[o++]=g>>>16&255,a[o++]=g>>>8&255,a[o++]=255&g;var m=p/4294967296*1e4&268435455;a[o++]=m>>>8&255,a[o++]=255&m,a[o++]=m>>>24&15|16,a[o++]=m>>>16&255,a[o++]=s>>>8|128,a[o++]=255&s;for(var w=0;w<6;++w)a[o+w]=f[w];return e||c(a)},r.v3=U,r.v4=function(r,e,n){var o=(r=r||{}).random||(r.rng||t)();if(o[6]=15&o[6]|64,o[8]=63&o[8]|128,e){n=n||0;for(var a=0;a<16;++a)e[n+a]=o[a];return e}return c(o)},r.v5=R,r.validate=a,r.version=function(r){if(!a(r))throw TypeError("Invalid UUID");return parseInt(r.substr(14,1),16)},Object.defineProperty(r,"__esModule",{value:!0})}));
Tests:
uuid lib v4
uuid.v4()
math random
Math.random()
crypto random values
crypto.getRandomValues(new Uint8Array(1))
crypto uuid
crypto.randomUUID()
Run results for: uuid lib v4 vs math random vs crypto getRandomValues vs crypto randomUUID

uuid lib v4

math random

crypto random values

crypto uuid
