Do you want to build a build tool?
summary
Explains step‑by‑step how to read .ts files with Node fs and path, parse them with TypeScript’s createSourceFile into an AST, query and mutate calls with TS Query, generate a new function via ts-template (example: wrap every doPhysics(lat,long,alt) call with doMagic and add a doMagic that sets molecule.temperature = -10), print with TypeScript printer and overwrite files on disk — a working end‑to‑end codegen/transformation pipeline.
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chapters (6)
- 0:00Introduction to magic
- 5:28Reading and writing files
- 13:03Abstract syntax trees
- 20:32Modifying source code
- 25:41Putting it all together
- 27:47Summary and tools
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