util.js — svelte Source File

Source Code

import * as $ from 'svelte/internal/client';
import { fastest_test } from '../../utils.js';

export function busy() {
	let a = 0;
	for (let i = 0; i < 1_00; i++) {
		a++;
	}
}

/**
 *
 * @param {string} label
 * @param {() => { run: (i?: number) => void, destroy: () => void }} setup
 */
export function create_test(label, setup) {
	return {
		unowned: {
			label: `${label}_unowned`,
			fn: async () => {
				// Do 10 loops to warm up JIT
				for (let i = 0; i < 10; i++) {
					const { run, destroy } = setup();
					run(0);
					destroy();
				}

				const { run, destroy } = setup();

				const result = await fastest_test(10, () => {
					for (let i = 0; i < 1000; i++) {
						run(i);
					}
				});

				destroy();

				return result;
			}
		},
		owned: {
			label: `${label}_owned`,
			fn: async () => {
				let run, destroy;

				const destroy_owned = $.effect_root(() => {
					// Do 10 loops to warm up JIT
					for (let i = 0; i < 10; i++) {
						const { run, destroy } = setup();
						run(0);
						destroy();
					}

					({ run, destroy } = setup());
				});

				const result = await fastest_test(10, () => {
					for (let i = 0; i < 1000; i++) {
						run(i);
					}
				});

				// @ts-ignore
				destroy();
				destroy_owned();

				return result;
			}
		}
	};
}