Baseline Compatibility Toolkit

Baseline Compatibility Toolkit is a full‑stack toolchain to integrate MDN Baseline data into your everyday workflow. It consists of:

• @baseline-toolkit/baseline-sdk: Core SDK to check features and scan code
• @baseline-toolkit/eslint-plugin: ESLint rules to prevent non‑Baseline features
• @baseline-toolkit/baseline-cli: CI/terminal scanner for projects
• @baseline-toolkit/vscode-extension: VS Code extension for diagnostics and hovers

Monorepo layout

packages/
  baseline-sdk/     (@baseline-toolkit/baseline-sdk)
  eslint-plugin-baseline/  (@baseline-toolkit/eslint-plugin)
  baseline-cli/     (@baseline-toolkit/baseline-cli)
  vscode-baseline/  (@baseline-toolkit/vscode-extension)

Quick start

1. Install deps and build all packages

npm install
npm run build

2. Try the CLI

node packages/baseline-cli/dist/index.js ./ --target widely

3. ESLint plugin

Add to your ESLint config:

{
  "plugins": ["@baseline-toolkit/eslint-plugin"],
  "rules": {
    "@baseline-toolkit/eslint-plugin/no-non-baseline": "error"
  }
}

4. VS Code extension

Open packages/vscode-baseline in VS Code and run the Extension Host (F5). Configure baseline.target in settings.

For details, see per‑package READMEs below.