Diffusion Ant (type-hints-typescript) Code

ant/tests/class_vs_proto.js
899dad6b8a9etype-hints-typescript

class_vs_proto.js
View Options

			var SequenceProto = function (start) {
			this.item = start;
			return this;
			};

			SequenceProto.prototype.next = function () {
			var temp = this.item;
			this.item = temp + 2;
			return temp;
			};

			class SequenceClass {
			constructor(start) {
			this.item = start;
			}
			next() {
			const temp = this.item;
			this.item = temp + 2;
			return temp;
			}
			}

			const ITERATIONS = 1_000_000;
			const WARMUP = 100_000;

			function runProto() {
			const seq = new SequenceProto(1);
			let num = 0;
			for (let i = 0; i < ITERATIONS; i++) {
			num = seq.next();
			}
			return num;
			}

			function runClass() {
			const seq = new SequenceClass(1);
			let num = 0;
			for (let i = 0; i < ITERATIONS; i++) {
			num = seq.next();
			}
			return num;
			}

			for (let i = 0; i < WARMUP; i++) {
			new SequenceProto(1).next();
			new SequenceClass(1).next();
			}

			const runs = 10;
			const protoTimes = [];
			const classTimes = [];

			for (let i = 0; i < runs; i++) {
			const t1 = performance.now();
			runProto();
			protoTimes.push(performance.now() - t1);

			const t2 = performance.now();
			runClass();
			classTimes.push(performance.now() - t2);
			}

			const avg = arr => arr.reduce((a, b) => a + b, 0) / arr.length;

			console.log(`Prototype avg: ${avg(protoTimes).toFixed(3)}ms`);
			console.log(`Class avg: ${avg(classTimes).toFixed(3)}ms`);
			console.log(`Difference: ${Math.abs(avg(protoTimes) - avg(classTimes)).toFixed(3)}ms`);
			console.log(`Winner: ${avg(protoTimes) < avg(classTimes) ? 'Prototype' : 'Class'}`);

Owner Packages

No Owners