Node.js Loader Hooks for Fun and Profit
summary
Shows the experimental Node.js loader hook API (Node 12, ES modules only, run with --experimental-modules and --experimental-loader) and three concrete builds that actually run: on-the-fly TypeScript transpile via typescript.transpileModule (reads .ts, writes .mjs, returns the JS URL), remote HTTP module fetch to /tmp then load (downloads a URL synchronously and resolves it), and proxy-based dependency injection exposing handlers (wraps exports with proxies and dynamicInstantiate to modify behavior); demos work but note experimental, synchronous, and not production-ready.
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chapters (9)
- 0:00Start
- 0:54Detecting loaded modules
- 1:15Check require.cache
- 2:27Monkeypatch Module._load
- 3:47Loader hooks
- 4:44loader.mjs
- 7:18TypeScript loader
- 11:29Remote loader
- 12:01index.mjs
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