cevek

// Utf8 parse performance: 1000 * 140kb ~ 140mb
// UTF8ToUTF16: 520ms
// Buffer.toString: 510ms

// Convert utf16 to utf8 performance: 1000 * 125k length
// UTF16ToUTF8: 420ms
// Buffer.toString: 1000ms

function UTF8ToUTF16(arr) {
    var arrBuff = new ArrayBuffer(arr.length * 2);

cevek

var fs = require('fs');
var js = fs.readFileSync('small.js', 'utf-8');

// performance:
// 10mb of code - 50ms

function find(js) {
    var skipBlocks = [];
    var k = 0;
    js = js + '\n';

cevek

// results: new P, new P ~160ms
// results: new P, new PP ~190ms
// results: new PP, new PP ~210ms
function P() {

}


P.prototype.then = function (fn, arg) {
    fn();

cevek

var arrX1 = [1,2,3, "", true, null, {}, 20, 40, 50, 60];
var arrY1 = [4,5,6, {}, 123, Object, 43, ",", void 0, null];
var arrX2 = [1,2,3, "", true, null, {}, 20, 40, 50, 60];
var arrY2 = [4,5,6, 234, {}, {}, Object, 43, ",", void 0, null];
var arrX3 = [1,2,3, {}, 20, 40, 50, 60];
var arrY3 = [4,5,6];
var arrX4 = [1,2,3, "", true, 23, null, {}];
var arrY4 = [4,5,6, false];
var arrX5 = [1,2,3, 123, "", true, null, {}, 20];
var arrY5 = [4,5,6, false, "", {}, Object];

cevek

var hash100 = {"x0":true,"x1":true,"x2":true,"x3":true,"x4":true,"x5":true,"x6":true,"x7":true,"x8":true,"x9":true,"x10":true,"x11":true,"x12":true,"x13":true,"x14":true,"x15":true,"x16":true,"x17":true,"x18":true,"x19":true,"x20":true,"x21":true,"x22":true,"x23":true,"x24":true,"x25":true,"x26":true,"x27":true,"x28":true,"x29":true,"x30":true,"x31":true,"x32":true,"x33":true,"x34":true,"x35":true,"x36":true,"x37":true,"x38":true,"x39":true,"x40":true,"x41":true,"x42":true,"x43":true,"x44":true,"x45":true,"x46":true,"x47":true,"x48":true,"x49":true,"x50":true,"x51":true,"x52":true,"x53":true,"x54":true,"x55":true,"x56":true,"x57":true,"x58":true,"x59":true,"x60":true,"x61":true,"x62":true,"x63":true,"x64":true,"x65":true,"x66":true,"x67":true,"x68":true,"x69":true,"x70":true,"x71":true,"x72":true,"x73":true,"x74":true,"x75":true,"x76":true,"x77":true,"x78":true,"x79":true,"x80":true,"x81":true,"x82":true,"x83":true,"x84":true,"x85":true,"x86":true,"x87":true,"x88":true,"x89":true,"x90":true,"x91":true,"x92":t

cevek

function forIn(obj) {
    // for(var i in obj){break;}
    for (var key in obj) {
        var val = obj[key];
        // console.log(key, val);
    }
}

function removeProp(key){
    node.style[key] = null;

cevek

function hash() {
    var obj = {};
    setHash(obj, 16);
    setHash(obj, 4);
    setHash(obj, 9);
    setHash(obj, 53);
    setHash(obj, 14);
}

function setHash(obj, id) {

cevek

var strings = ["eqwed", "cfjnf", "ekttp", "dghnc", "wcdkt", "quwuj", "almt", "beijl", "tjdku", "gfpit", "frpap", "mrrbo", "hquup", "tlvb", "ciubn", "qamk", "bohgl", "ufpti", "omelp", "vssmj", "repvs", "gwgbp", "ltwog", "lpcnh", "nngsq", "ejkke", "uvohi", "rshow", "rkmvo", "suffs", "dncla", "nmewm", "ccepr", "ggura", "ssjct", "ndfwb", "trjof", "risin", "baqlf", "ari", "lubqt", "atlue", "atrgo", "wrnsn", "quwrf", "fvkse", "norah", "cuora", "dawng", "ueowi", "abidd", "svif", "salbk", "sdhkt", "ewpoe", "rth", "uqbwk", "qtvnc", "obevu", "cadjr", "wvqub", "oemji", "gnoak", "lqhpb", "esndj", "vwbgm", "thhql", "gwdsu", "raleg", "wmofv", "dinmj", "evjtt", "bjisl", "lmbrn", "pglqh", "uvbbi", "rocbg", "ltgmr", "umqwv", "iidcm", "plcie", "hqlww", "somtl", "gldng", "cwmgh", "mhve", "vjrru", "lcvjp", "mjfff", "nohwu", "bjqoi", "wftgf", "atgn", "gl", "pmuiq", "fjqka", "swdpi", "hmt", "vgmju", "mko", "img", "ocdeb", "ihglv", "niiug", "mbeeu", "rrwsh", "scdvj", "ofpsj", "qlkdn", "habkd", "jbonc", "mdmrc", "sqiro", "rmhn", "sh

cevek

var str = ["d2rqw3","q5mkv6","68heu9","jbc8tc","we72sf","ch1tri","pjtnql","p5mohp","3ipjbo","evse5n","qbv8wn","4p13qm","g53vkl","ri6qek","5v9l8j","hbcg2i","sofath","74i5ng","ihl0hf","tunsbe","8aqn5d","jnthwd","v3wcqc","9h27kb","ku52ea","wa7u89","anap28","m3djt7","0ggen6","btj9h5","n9m4b4","1mow53","d2rqw3","ofulq2","2t0gk1","e93be0","pm667w","42911v","ffbssu","qsenmt","58higs","glkdar","s1n84r","6eq2vq","hrsupp","t7vpjo","7l1kdn","j14f7m","ue7a1l","8ra4sk","k7cwmj","vkfrgi","a0imah","ldlh4h","wqobvg","b6r6pf","mju1je","0wwtdd","cd2o7c","nq5j1b","268dsa","djb8m9","owe3g8","3cgva7","epjq47","q5mkv6","4ipfp5","fvsaj4","rbv5d3","5p1072","h53s11","si6ms0","6v9hlw","ibccfv","tof79v","84i23u","jhktut","uunoos","9aqjir","kntecq","w3w96p","ah240o","lu4vrn","0a7qlm","bnalfl","n3dg9l","1ggb3k","ctj5uj","o9m0oi","2mosih","e2rncg","pfui6f","3t0d0e","f937rd","qm62lc","528ufb","gfbp9b","rsek3a","68heu9","hlk9o8"];
var hash = {};
for (let i = 0; i < str.length; i++) {
    hash[str[i]] = i;
}

function getHash(hash, prop) {
 

cevek

https://github.com/v8/v8/tree/master/src/runtime

FinishArrayPrototypeSetup
SpecialArrayFunctions
FixedArrayGet
FixedArraySet
TransitionElementsKind
RemoveArrayHoles
MoveArrayContents
EstimateNumberOfElements