Microsoft Power BI visuals TypeUtils

TypeUtils is a set of functions and classes in order to extend the basic types for Power BI custom visuals

Usage

Learn how to install and use the TypeUtils in your custom visuals:

• Usage Guide

Development

Common scripts:

Command	Description
npm ci	Install pinned dependencies from package-lock.json
npm run build	Compile src/ into lib/ with TypeScript declarations and source maps
npm test	Run the full Vitest suite once (used by CI)
npm run test:watch	Run Vitest in watch mode — re-runs affected tests on file change
npm run test:coverage	Run Vitest once and produce a coverage report under coverage/
npm run test:typecheck	Type-check the test/ tree with TypeScript using test/tsconfig.json (run on CI)
npm run lint	Lint the codebase with ESLint (flat config in eslint.config.mjs)
npm run lint:fix	Auto-fix lint issues where possible

TypeScript configs

• tsconfig.json — production build of src/ → lib/ only
• test/tsconfig.json — extends the main config, adds vitest/globals types and includes the test/ tree so the IDE recognizes describe / it / expect in tests

Tests

Tests live under test/ and are executed by Vitest in a Node environment (no browser). The configuration is in vitest.config.mts.

Contributing

• Read our contribution guideline to find out how to contribute bugs fixes and improvements
• Issue Tracker

License

See the LICENSE file for license rights and limitations (MIT).