Change Log

v55

• Add playground to write esm app online, try it on https://esm.sh?playground
• Add a better cjs exports parser: cjs-esm-exports
• Support web worker

  import editorWorker from '/monaco-editor/esm/vs/editor/editor.worker?worker'
  
    const worker = new editorWorker()

• Add queue interface
• Support dataurl, .wasm import
• Import deno polyfills from https://deno.land/std@0.113.0/node
• Fix package CSS

v54

• Update deno polyfills from 0.106.0 to 0.110.0 (#190)
• Add deno module polyfill (#164)
• Fix (storage/fs_local) file path portability bug (#158)

v53

• Add Cache-Tag header for CDN purge
• Add s3 storage support (#153)
• Fix require replacement (#154)

v52

• Fix types build (#149)
• Use stream and events from deno std/node (#136) @talentlessguy
• Fix localLRU and allow for memoryLRU (#148) @jimisaacs

v51

• Fix build breaking change in v50 (#131).
• Add localLRU FS layer (#126)
• Add a Cache Interface that is using to store temporary data like npm packages info.
• Do not try to build /favicon.ico (#132)
• Add lovely pixi.js, three.js and @material-ui/core testing by @jimisaacs (#134, #139).

v50

• Improve build performance to burn the server CPU cores! Before this, to build a module to ESM which has heavy deps maybe very slow since the single build task only uses one CPU core.
• Rewrite the dts transformer to get better deno types compatibility and faster transpile speed.
• Add Deno testing CI on Github.

v49

• Improve the build process to fix an edge case reported in #118

  const Parser = require('htmlparser').Parser;

  esm (v48) output:

  import htmlparser2 from '/v48/htmlparser2@5.0.0/es2021/htmlparser2.js'
  const Parser = htmlparser2.Parser; // parser is undefined

  the expected output was fixed in v49:

  import { Parser as htmlparser2Parser } from '/v48/htmlparser2@5.0.0/es2021/htmlparser2.js'
  const Parser = htmlparser2Parser; // parser is a class

• Add more polyfills for Deno, huge thanks to @talentlessguy (#117)
  • path
  • querystring
  • url
  • timers
• Better self-hosting options improved by @jimisaacs, super! (#116, #119, #120, #122)
• Add Unlimted(max 1PB) Storage to store builds and cache via NFS on esm.sh back server behind Cloudflare

v48

• Improve cjs-lexer service to handle the edge case is shown below:

  function debounce() {};
  debounce.debounce = debounce;
  module.exports = debounce;

  esm output:

  export { debounce } // this was missed
  export default debounce

• Ignore ?target in Deno (fix #109)
• Add Storage Interface to store data to anywhere (currently only support postdb + local FS)

v47

• Improve dts transformer to use cdn domain (fix #104)
• Update polyfills (fix #105)

v46

• Split modules based on exports defines (ref #78)
• Add cache-folder config for yarn add
• Improve resolveVersion to support format 4.x (fix #93)
• Import initESM to support bare exports in package.json (fix #97)
• Bundle mode should respect the extra external (fix #98)
• Support node:path importing (fix #100)
• Pass ?alias and ?deps to deps (fix #101)
• Improve cjs-lexer sever (fix #103)
• Upgrade rex to 1.4.1
• Upgrade esbuild to 0.12.24

V45

• Improve build performance
• Filter cjs-moudle-lexer server invalid exports output
• Improve resolveVersion function to support format like 4.x (fix #93)
• Improve dts transform (fix #95)

V44

• Add Alias feature (#89)

  import useSWR from 'https://esm.sh/swr?alias=react:preact/compat'

  in combination with ?deps:

  import useSWR from 'https://esm.sh/swr?alias=react:preact/compat&deps=preact@10.5.14'

  The origin idea was came from @lucacasonato.
• Add node build target (#84)
• Check exports field to get entry point in package.json
• Run cjs-lexer as a server
• Upgrade esbuild to 0.11.18 with es2021 build target
• Bugfixs for #90, #85, #83, #77, #65, #48, #41.

V43

• Add /status.json api
• Use previous build instead of waiting/404 (fix #74)
• Fix deps query (#71)

V42

• Add __esModule reserved word
• Align require change for esbuild 0.12
• Fix setImmediate polyfill args (#75)
• Upgrade esbuild to 0.11.12

V41

• Add timeout (30 seconds) for new build request, or use previous build version instead if it exists
• Fix bundle mode
• Fix build dead loop
• Upgrade esbuild to 0.11.12

V40

• Update polyfills for node builtin modules
• Upgrade esbuild to 0.11.9

V39

• Imporve parseCJSModuleExports to support json module
• Pass NODE_ENV to parseCJSModuleExports
• Update node buffer polyfill
• Upgrade postdb to v0.6.2

V38

• Fix build for packages with module type (#48)
• Improve parseCJSModuleExports function (use cjs-module-lexer and nodejs eval both to parse cjs exports, and ignore JSON module)
• Pass NODE_ENV to parseCJSModuleExports function
• Upgrade esbuild to 0.11.6

V37

• Add bundle mode
• Fix module exports parsing

V36

• Fix esm build for some edge cases
• Add simple test (thanks @zhoukekestar)
• Upgrade esbuild to 0.11.5

V35

• Set build target by the user-agent of browser automaticlly

V34

• Remove bundle mode · Breaking
• Add build queue instead of mutex lock
• Use AST(cjs-module-lexer) to parse cjs exports
• Add a testing page at https://esm.sh?test
• Fix __setImmediate$ is not defined
• Support exports define in package.json
• Support mjs extension
• Improve NpmPackage resolve (fix #41)
• Upgrade esbuild to 0.11.4
• Upgrade rex to 1.3.0