Diffusion Ant (type-hints-typescript) Code

ant/tests/bench_includes_breakdown.cjs
899dad6b8a9etype-hints-typescript

bench_includes_breakdown.cjs
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			function runBench(label, iterations, fn, options) {
			const warmup = options && options.warmup ? options.warmup : 5;
			const samples = options && options.samples ? options.samples : 10;

			for (let i = 0; i < warmup; i++) fn();

			let min = Infinity;
			let max = -Infinity;
			let total = 0;
			let last = 0;

			for (let i = 0; i < samples; i++) {
			const start = performance.now();
			last = fn();
			const elapsed = performance.now() - start;
			if (elapsed < min) min = elapsed;
			if (elapsed > max) max = elapsed;
			total += elapsed;
			}

			const mean = total / samples;
			const opsPerMs = iterations / mean;

			console.log(label);
			console.log(` iterations: ${iterations}`);
			console.log(` result: ${last}`);
			console.log(` mean: ${mean.toFixed(3)} ms`);
			console.log(` min: ${min.toFixed(3)} ms`);
			console.log(` max: ${max.toFixed(3)} ms`);
			console.log(` ops/ms: ${opsPerMs.toFixed(1)}`);
			}

			const dense = [];
			for (let i = 0; i < 1024; i++) dense.push(i);

			const sparse = Array(1024);

			const genericOwn = {
			get length() {
			return 1024;
			},
			get 1023() {
			return 1;
			}
			};

			const genericProtoBase = { 1023: 1 };
			const genericProto = Object.create(genericProtoBase);
			Object.defineProperty(genericProto, "length", {
			configurable: true,
			enumerable: true,
			get() {
			return 1024;
			}
			});

			const proxy = new Proxy(
			{ length: 4, 0: NaN, 1: 0, 2: NaN, 3: 1 },
			{
			get(target, key) {
			return target[key];
			}
			}
			);

			const typed = new Uint32Array(1024);
			typed[1023] = 1;

			runBench("dense hit tail", 20000, () => {
			let hits = 0;
			for (let r = 0; r < 20000; r++) {
			if (dense.includes(1023)) hits++;
			}
			return hits;
			});

			runBench("dense miss", 20000, () => {
			let hits = 0;
			for (let r = 0; r < 20000; r++) {
			if (dense.includes(-1)) hits++;
			}
			return hits;
			});

			runBench("dense hit negative fromIndex", 20000, () => {
			let hits = 0;
			for (let r = 0; r < 20000; r++) {
			if (dense.includes(1023, -1)) hits++;
			}
			return hits;
			});

			runBench("sparse includes(undefined)", 50000, () => {
			let hits = 0;
			for (let r = 0; r < 50000; r++) {
			if (sparse.includes(undefined)) hits++;
			}
			return hits;
			});

			runBench("sparse miss non-undefined", 50000, () => {
			let hits = 0;
			for (let r = 0; r < 50000; r++) {
			if (sparse.includes(1)) hits++;
			}
			return hits;
			});

			runBench("generic own getter", 20000, () => {
			let hits = 0;
			for (let r = 0; r < 20000; r++) {
			if ([].includes.call(genericOwn, 1, 1023)) hits++;
			}
			return hits;
			});

			runBench("generic inherited value", 20000, () => {
			let hits = 0;
			for (let r = 0; r < 20000; r++) {
			if ([].includes.call(genericProto, 1, 1023)) hits++;
			}
			return hits;
			});

			runBench("proxy NaN fromIndex", 20000, () => {
			let hits = 0;
			for (let r = 0; r < 20000; r++) {
			if (Array.prototype.includes.call(proxy, NaN, 1)) hits++;
			}
			return hits;
			});

			runBench("typedarray hit", 50000, () => {
			let hits = 0;
			for (let r = 0; r < 50000; r++) {
			if (typed.includes(1)) hits++;
			}
			return hits;
			});

			runBench("typedarray miss", 50000, () => {
			let hits = 0;
			for (let r = 0; r < 50000; r++) {
			if (typed.includes(2)) hits++;
			}
			return hits;
			});

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