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).