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name: typescript-write description: Write TypeScript and JavaScript code following Metabase coding standards and best practices. Use when developing or refactoring TypeScript/JavaScript code.

TypeScript/JavaScript Development Skill

Autonomous Development Workflow

• Do not attempt to read or edit files outside the project folder
• Add failing tests first, then fix them
• Work autonomously in small, testable increments
• Run targeted tests, and lint continuously during development
• Prioritize understanding existing patterns before implementing
• Don't commit changes, leave it for the user to review and make commits

Linting and Formatting

• Lint: yarn lint-eslint-pure
  • Run ESLint on the codebase
• Format: yarn prettier
  • Format code using Prettier
• Type Check: yarn type-check-pure
  • Run TypeScript type checking

Testing

JavaScript/TypeScript Tests

• Test a specific file: yarn test-unit-keep-cljs path/to/file.unit.spec.js
• Test by pattern: yarn test-unit-keep-cljs -t "pattern"
  • Runs tests matching the given pattern

ClojureScript Tests

• Test ClojureScript: yarn test-cljs
  • Run ClojureScript tests