codex

TypeScript Expert

Expert TypeScript for pure TS projects: CLI tools, libraries, scripts, and backends on Node or Bun with SOLID principles.

2 on GitHubby Fusenginev1.0.23MITupdated todayFramework

Plugin typescript-expert in Fusengine/codex-plugins. Commands read from the repo's manifest — today.

This plugin runs code on your machine — its hooks fire automatically on events like tool use. The exact commands are listed below; read them before installing.

What it installs

Skills (7)

  • ts-config

    Use when creating or migrating a tsconfig.json, choosing module/moduleResolution, or fixing TS 6.0 deprecations that are hard errors in TS 7.0. Not for language syntax (ts-language-patterns).

  • ts-language-patterns

    Use when writing or reviewing modern TS syntax — const type parameters, using/await using, standard decorators, satisfies, or LLM anti-patterns (legacy enum/namespace). Not for tsconfig (ts-config).

  • ts-lint-format

    Use when choosing or configuring a TS linter/formatter — Biome 2.x vs ESLint 10 flat config + typescript-eslint typed linting. Not for type checking itself (ts-config).

  • ts-packaging

    Use when publishing a TypeScript library — exports map, JSR vs npm, dual ESM/CJS, type validation, provenance. Not for application deployment.

  • ts-runtime-bun

    Use when running TypeScript on Bun — bunfig.toml, bun test, Bun.build/--compile, or Bun workspaces. Not for Node.js runtime setup (ts-runtime-node).

  • ts-runtime-node

    Use when running TypeScript directly on Node.js without a build step — native type stripping, its limits, or when to reach for tsx. Not for Bun (ts-runtime-bun).

  • ts-testing

    Use when writing or configuring TypeScript tests and choosing between bun test and Vitest. Not for framework-specific testing (React → react-testing).

Hooks (2)

  • PreToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

  • PostToolUse

    bun "${CODEX_HOME:-$HOME/.codex}/node_modules/@fusengine/harness/dist/cli/bin.mjs" hook codex core

View source on GitHub

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