@hairyf/unplugin

Hairy's curated collection of agent skills.

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SKILL.md
nameunplugin
descriptionUnified plugin system for Vite, Rollup, webpack, esbuild, Rspack, Farm, Rolldown, and Bun. Use when authoring or consuming build-tool plugins that work across bundlers.

Unplugin provides a single Rollup-style plugin API that runs on Vite, Rollup, webpack, esbuild, Rspack, Rolldown, Farm, and Bun. Use these skills when implementing a new unplugin, integrating an existing one, or debugging hook/context behavior across bundlers.

The skill is based on unplugin v3.0.0, generated at 2026-01-30.

Core References

Topic Description Reference
Overview What unplugin is, supported bundlers, when to use core-overview
Core API createUnplugin, factory signature, bundler-specific creators core-api
Hooks and context Lifecycle hooks, filters, this.parse / emitFile / warn / error core-hooks-and-context
Hook compatibility Per-bundler support tables for hooks and context core-hook-compatibility
Integration Installing and registering in Vite, Rollup, webpack, etc. core-integration

Features

Topic Description Reference
Filters filter option for resolveId, transform, load (performance) features-filters
Nested plugins Returning an array of plugins from the factory features-nested-plugins
Bundler-specific meta.framework, escape hatches (vite/webpack/esbuild/…), createXxxPlugin features-bundler-specific
Virtual modules resolveId + load pattern; filter for load features-virtual-modules
Parsing setParseImpl, this.parse; when needed (esbuild, webpack, etc.) features-parsing
Output and assets emitFile (EmittedAsset only), writeBundle (timing only) features-output-and-assets

Best Practices

Topic Description Reference
Conventions unplugin- prefix, keyword, default + subpath exports best-practices-conventions
Diagnostics this.warn / this.error, UnpluginMessage shape best-practices-diagnostics
Scaffolding Templates (unplugin-starter), try online, prerequisites best-practices-scaffolding

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