# itsdouges/typescript-transformer-handbook

📘 A comprehensive handbook on how to create transformers for TypeScript with code examples.

Repository: https://github.com/itsdouges/typescript-transformer-handbook
Canonical: https://ross.abutalabs.com/products/typescript-transformer-handbook
Language: TypeScript
License Family: other
Topics: typescript, handbook, transformer, ts-transformer
Last push: 2025-02-14T07:06:22+00:00

## Health v2 (maintenance only)
Score: 35/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 6, release rhythm 35, longevity 100
- inputs: {"age_days": 2440, "days_push": 565, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1019, forks 33 (observed 2026-08-28T04:03:15.006444+00:00)

## What it is
A comprehensive handbook explaining how to write TypeScript transformers, covering the compiler pipeline, AST traversal, and transformation operations with code examples. It serves as a learning resource rather than a runnable library.

## Use cases
- learn how to write a typescript transformer
- understand the typescript compiler ast pipeline
- manipulate typescript abstract syntax tree nodes
- add custom compile-time code transformations to typescript builds
- learn how to visit and replace ast nodes with the typescript api
- consume ts transformers with webpack or ttypescript

## When to choose
- you are building a custom TypeScript transformer and need guided examples
- you want to understand TypeScript's parser, binder, and emit stages
- you need recipes for AST node manipulation, scoping, or import handling

## When to avoid
- you need a ready-made transformer library rather than documentation
- you are working with Babel/SWC plugins instead of the TypeScript compiler API
- you need guaranteed up-to-date coverage of the latest TypeScript compiler internals

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: documentation, compiler, parser, developer-tools
- domain: compilers, parsers, tutorials, developer-tools, documentation
- platform: cross-platform
- tags: typescript-transformers, ast, code-generation, handbook, ts-transformer, typescript, nodejs

## Member repositories
- itsdouges/typescript-transformer-handbook (main) score 35

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:15.006444+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:09:23.250844+00:00, confidence not recorded.
  - readme: https://github.com/itsdouges/typescript-transformer-handbook (fetched 2026-08-28T04:03:15.006444+00:00, sha 5145114c6cae)
- Data as of 2026-08-30T08:39:29.467469+00:00.