type test and conversion related functions

<a type="test-setup">

Report which exported .d.ts declarations are covered by a sibling *.test-d.ts type test.

`git-span` tracks implicit semantic dependencies: exact line ranges or whole files that must stay aligned even though no schema, type, test, or build step enforces the relationship.

Deep data type test

Tools for testing inferred types in Glint-enabled templates

MooTools Type-Test Utility

Check the environment type: test, debug, development, production.

A React component for generating a type test

Claude-facing control layer for Android emulators over MCP — build, launch, inspect, click, type, test and verify your app from a conversation.

Type-test pattern matching for JavaScript

Simple javascript library to type test any given value

Simple, transparent parser combinators toolkit that supports any tokens

Create a full Content-Type header given a MIME type or extension and cache the result

[](https://www.npmjs.com/package/jsdoc-type-pratt-parser) []

A ridiculously light-weight argument validator (now browser friendly)

Infer the content-type of a request.

A library for arbitrary-precision decimal and non-decimal arithmetic

> firestore-document-type-patterns gives you type test patterns. > Then you might be able to check value types for security rule test easily.

[type-definitions]: https://github.com/jestjs/jest/blob/main/packages/jest-types/src/Circus.ts