# colinhacks/zshy

🐒 Bundler-free build tool for TypeScript libraries. Powered by tsc.

Repository: https://github.com/colinhacks/zshy
Canonical: https://ross.abutalabs.com/products/zshy
Language: TypeScript
License: MIT
License Family: permissive
Last push: 2026-06-12T16:03:06+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 87, release rhythm 88, longevity 30
- inputs: {"age_days": 433, "days_push": 82, "days_rel": 82, "gap_med": 8, "n_releases_24m": 20}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1117, forks 21 (observed 2026-08-28T04:03:39.010172+00:00)

## What it is
zshy is a bundler-free build tool for transpiling TypeScript libraries, powered by tsc. It reads entrypoints from package.json, auto-generates the exports map, and produces dual ESM/CJS builds without any bundler configuration.

## Use cases
- build a typescript library without a bundler
- generate esm and cjs builds from one typescript source
- auto-generate package.json exports map
- publish a typescript package to npm
- replace tsup or unbuild with a tsc-based tool
- build a cli tool with bin support in typescript

## When to choose
- you maintain a TypeScript library and want zero bundler config
- you need dual ESM/CJS output with correct exports maps
- you prefer tsc's transpilation semantics over esbuild/rollup
- you want entrypoints declared declaratively in package.json

## When to avoid
- you need fast incremental builds or watch mode performance
- you need bundling, minification, or tree-shaking
- you're building an application rather than a library
- you need advanced transforms like CSS or asset pipelines

## Facets
- artifact type: cli-tool
- maturity: active
- function: build-tool, compiler, cli
- domain: developer-tools, web-development, frontend, backend
- platform: cli, cross-platform
- tags: typescript, tsc, bundler-free, esm, cjs, dual-package, package-exports, npm, nodejs

## Member repositories
- colinhacks/zshy (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:39.010172+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 2026-08-30T06:41:52.854128+00:00, confidence not recorded.
  - readme: https://github.com/colinhacks/zshy (fetched 2026-08-28T04:03:39.010172+00:00, sha 42c9c55ff1e8)
  - registry_npm: https://registry.npmjs.org/zshy (fetched 2026-08-29T12:45:31.541736+00:00, sha e5829c5fa561)
- Data as of 2026-08-30T08:39:29.467469+00:00.