NodeJS 版本

• 建议只使用 LTS 版本
  • 因为很多使用 gyp 的项目不会对非 lts 有支持
  • lts 版本周期长
• nodejs release
  • Node 版本 <-> 模块版本
• 发布周期
  • 每 6 个月一个大版本
  • 偶数版本为 LTS - 支持 30 个月
• 参考
  • v8 js/wasm 特性

ver	Active LTS	EOL	v8 ver
Node v20 LTS	2023-10-24	2026-04-30	v11.3
Node v18 LTS	2022-10-25	2025-04-30	v10.1
Node v16 LTS	2021-10-26	2023-09-11	v9.0
Node v14 LTS	2020-10-27	2023-04-30	v8.1
Node v12 LTS	2019-10-21	2022-04-30	v7.4

Roadmap

• corepack

• https://unofficial-builds.nodejs.org/download/release
  • arm64 musl nodejs/unofficial-builds#59

Node v21

• V8 11.8
  • Array grouping
  • ArrayBuffer.prototype.transfer
• 默认 ESM
  • --experimental-default-type=module
• 默认 WASM
  • --experimental-wasm-modules
  • 文件以 \0asm 开头 - magic
• Stable fetch/WebStreams
  • WebStreams, FormData, Headers, Request, Response, fetch
• Built-in WebSocket client
  • --experimental-websocket
• navigator.hardwareConcurrency
• https://nodejs.org/en/blog/announcements/v21-release-announce

Node v20 LTS

• v8 11.3
  • Resizable ArrayBuffer
    • Chrome 111
    • Safari 16.4
  • Growable SharedArrayBuffer
  • String.prototype.isWellFormed
  • String.prototype.toWellFormed
  • Regex v
• APIs
  • import.meta.resolve
  • 完善 Web Crypto API
  • 完善 WASI - WebAssembly System Interface
    • https://github.com/nodejs/uvwasi
  • readdir(dirname, { recursive: true })
• 支持 .env
• --experimental-loader
• --experimental-permission
  • --allow-fs-read
  • --allow-fs-write
  • --allow-child-process
  • --allow-worker
  • ERR_ACCESS_DENIED
  • process.permission.has('fs.write');
  • process.permission.has('fs.write', '/home/me/mydata.json')
• Test Runner
  • import { test, describe, it, mock } from 'node:test';
  • node --test --watch test.mjs
• single executable application - SEA

sea-config.json

{
  "main": "myscript.js",
  "output": "sea-prep.blob"
}

node --experimental-sea-config sea-config.json

loader.js

export async function resolve(specifier, parentModuleURL, defaultResolve) {
  console.log('Resolving:', specifier);
  return defaultResolve(specifier, parentModuleURL);
}

export async function load(url, defaultLoad) {
  console.log('Loading:', url);
  return defaultLoad(url);
}

node --experimental-loader=./loader.mjs

• https://nodejs.org/en/blog/announcements/v20-release-announce

Node v18 LTS

警告

• fetch 不支持指定 agent 做代理 #43187
  • 使用 undici

• fetch
• Web Streams API
• node:* Prefix-only core Modules
• node:test, ode:assert
  • import test from 'node:test'
• Blob
• BroadcastChannel
• V8 10.1 - Chromium 101
• OpenSSL 3
• Blob, BrodcastChannel
• Watch
  • node --watch
  • node --watch-path

---

• Build-time user-land snapshot
  • –-node-snapshot-main
• Undici
  • HTTP Client

Node v16 LTS

• V8 9.0
• npm v7
• Apple M1
• 稳定
  • AbortController
  • Source Maps v3
• 实验阶段
  • Web Crypto API

Node v14 LTS

• v8 版本 v8.1
  • Optional Chaining
  • Nullish Coalescing
  • Intl.DisplayNames
  • Intl.DateTimeFormat
    • calendar
    • numberingSystem
• esm 正常使用 - 不再会有 wanring
• Diagnostic Reporting 稳定
• 实验特性
  • Async Hooks API - async 本地存储
  • WASI - Web Assembly System Interface
• Node.js 14 ChangeLog

Node v12 LTS

• V8 7.4
  • JIT-less V8
  • WebAssembly Threads/Atomics
  • ES6 Module
  • Private Class Fields
  • TLS 1.3
• Top-Level Await - --experimental-top-level-await
• API
  • 新增 EventTarget