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esbuild-config-generator skill

/esbuild-config-generator

This skill generates a complete esbuild configuration file for fast bundling in TypeScript and JavaScript projects.

npx playbooks add skill ehtbanton/claudeskillsrepo --skill esbuild-config-generator

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Files (2)
SKILL.md
729 B
---
name: esbuild-config-generator
description: Generate esbuild configuration files for ultra-fast JavaScript/TypeScript bundling. Triggers on "create esbuild config", "generate esbuild configuration", "esbuild setup", "fast bundler config".
---

# Esbuild Config Generator

Generate esbuild configuration for ultra-fast JavaScript bundling.

## Output Requirements

**File Output:** `esbuild.config.mjs` or build script
**Format:** Valid esbuild configuration
**Standards:** esbuild 0.19+

## When Invoked

Immediately generate a complete esbuild configuration or build script.

## Example Invocations

**Prompt:** "Create esbuild config for Node.js API"
**Output:** Complete `esbuild.config.mjs` with Node.js target settings.

Overview

This skill generates ready-to-use esbuild configuration files or build scripts for ultra-fast JavaScript and TypeScript bundling. It produces valid esbuild 0.19+ configurations tailored to targets like Node.js, browsers, or libraries. Use simple triggers such as "create esbuild config" or "esbuild setup" to get a complete esbuild.config.mjs or a runnable build script.

How this skill works

When invoked, the skill inspects the requested target environment, input entry points, and desired features (minification, sourcemaps, JSX, TypeScript, platform, format). It outputs a complete esbuild.config.mjs or an equivalent Node script that includes plugins, loaders, and platform-specific flags. It ensures compatibility with esbuild 0.19+ and recommends sensible defaults while exposing options for customization.

When to use it

  • Setting up a new project that needs fast bundling for Node.js, browser, or library distribution
  • Migrating from another bundler to esbuild for faster builds and simpler config
  • Generating a baseline config to customize for monorepos or multi-target builds
  • Creating CI-friendly build scripts or local development watch tasks
  • Adding TypeScript, JSX, or asset handling (CSS, images) to an existing setup

Best practices

  • Specify exact target and format (e.g., node14 vs chrome120, cjs vs esm) to optimize output
  • Enable sourcemaps during development and strip them in production builds
  • Use incremental builds or watch mode during development for fastest feedback
  • Prefer esbuild plugins only when necessary; use native loaders where possible
  • Pin esbuild version in docs or package.json to avoid breaking changes across projects

Example use cases

  • Create esbuild config for a Node.js API with externalized dependencies and cjs output
  • Generate a browser-focused build: entry points, code splitting, and asset loaders
  • Produce a TypeScript + React build with JSX runtime, CSS modules, and minification
  • Build a universal library: produce both ESM and CJS outputs with proper sourcemaps
  • Generate a CI build script that runs a production build and writes artifacts to dist/

FAQ

Which file formats does the skill produce?

It generates esbuild.config.mjs or a Node-based build script that runs esbuild; both are valid for esbuild 0.19+.

Can it handle TypeScript and JSX?

Yes. The generated config includes TypeScript support and JSX options (automatic/transform) tailored to your framework choice.