JavaScript library example using Emscripten

dist/my-lib.js vs dist/legacy/my-lib.js

dist/my-lib.js is built for modern browsers and bundlers.

• APIs are exported as JavaScript modules (ESM)
  • Library users use this with import syntax in JavaScript
• Uses WebAssembly for performance

dist/legacy/my-lib.js is build for compatibility.

• APIs are exported in global scope
  • Library users use this <script> tag before main programs
• Doesn't use WebAssembly

Requirements

• POSIX shell
• GNU Make 4.2.1
• Emscripten 3.1.8
• Node.js 14.18.2
• npm 6.14.15

Build

npm install
npm run prepare
npm run build

Run Demo

HTML

npx serve

Then open demo.html or demo-legacy.html in your browsers and check DevTool console output.

JavaScript (Deno)

deno run demo-deno.js