HE Shi-Jun hax

Rough exmaple:

switch (x) {
  case Number ?n -> console.log(n)
  case String ?s -> console.log(s)
  case Point {?x, ?y} -> console.log(x, y)
  case OtherPattern ?binding -> console.log(binding)
}

NOTE: This proposal was mainly written 2 years ago, many examples may already outdated, but the whole idea should still apply.

Experimental API

Motivation

I have a dream, that the new JS APIs could be developed like good open source libraries, have reference implementation maintained by champions and volunteers in the whole lifecycle from stage 1 to stage 4, clearly marked as "experimental feature" not "polyfill", follow semver, and available in all platforms (all engines, browsers and node.js) automatically, accept issues and PRs in official github repo, can have branches to test new ideas, allow forks and healthy competition...

Problems

Array (a collection of elements accessed by integer indices) is probably one of the most commonly used data structures by programmers, and slice is one of the most commonly used array methods. (This statistic also indicates that splice seems to be used more than we thought.)

Method	Search Results
push	more than 2913780 results from 110260 repositories
forEach	1303701 results from 94472 repositories
slice	743508 results from 76749 repositories
indexOf	621518 re

目前 Vitest 官方并没有向 Vite 那样维护了一个公司列表。Vitest 团队暂时也没有这样的列表。

有一些三方列表，以下为从 https://stackshare.io/vitest 提取的部分公司，多为欧洲公司

	const HandlerID = Symbol()

	export function defineEvent(obj, name) {
	const handlers = new Set()
	const fn = function () {
	for (const handler of handlers) {
	try {
	handler()
	} catch (e) {
	Promise.reject(e)

	// example.js -- 示例
	// verify.js -- 跑一下 type challenge
	// play/tsconfig.json
	// play/utils.d.ts
	// 需要安装 typescript

	// $ node example
	// { exitCode: 0, stdout: '', stderr: '', error: undefined }
	// {
	// exitCode: 2,