blob: 2755842f48e7a6b8b9f2f8cd77d748a655238076 [file] [log] [blame]
function assert(b) {
if (!b)
throw new Error("Bad assertion.");
}
noInline(assert);
let objs = [];
let keyPool = [];
let symbolPool = [];
const numKeys = 300;
for (let i = 0; i < numKeys; ++i) {
keyPool.push(i + "foo");
symbolPool.push(Symbol("Foo"));
}
for (let i = 0; i < 2000; i++) {
let num = (Math.random() * numKeys) | 0;
let o = {};
for (let i = 0; i < num; ++i) {
o[keyPool[i]] = 25;
o[symbolPool[i]] = 40;
}
objs.push(o);
}
let time = 0;
function foo(o) {
let props = Object.getOwnPropertyNames(o);
props.push(...Object.getOwnPropertySymbols(o));
let start = Date.now();
for (let i = 0; i < props.length; ++i) {
let s = props[i];
assert(o.hasOwnProperty(s));
}
time += Date.now() - start;
}
noInline(foo);
for (let o of objs) {
foo(o);
}
const verbose = false;
if (verbose)
print(time);