By name: xy-toolchain description: XY Labs development toolchain (@xylabs packages). Covers @xylabs/toolchain CLI, ESLint flat config, TypeScript config variants, and Vitest. Activates when setting up projects, running builds, configuring linting, or writing tests in XY/XYO/XL1 projects.
XY Toolchain
XY Labs publishes a coordinated set of development packages from the xylabs/config monorepo. This skill covers how to use them.
This builds on the Development Skill which covers universal principles. This skill covers the specific tools.
Table of Contents
Toolchain & Project Setup
Read when setting up a new project, running build/lint/compile commands, or troubleshooting build failures. Covers @xylabs/toolchain CLI, package manager conventions, and project structure.
ESLint Configuration
Read when configuring ESLint, troubleshooting lint errors, or extending lint rules. Covers @xylabs/eslint-config-flat setup and usage.
TypeScript Configuration
Read when configuring the TypeScript compiler, choosing a tsconfig base, or troubleshooting compilation. Covers @xylabs/tsconfig, @xylabs/tsconfig-dom, and @xylabs/tsconfig-react.
Testing with Vitest
Read when setting up tests, configuring Vitest, or integrating tests with the build pipeline. Covers Vitest setup and XY-specific testing conventions.
Scaffolding a new XL1 app
To create a new XL1 project from scratch — including the package.json, tsconfig.json, ESLint and Vite configs, entry point, and dependency graph — use the xl1-scaffold skill.