payload-is

A comprehensive TypeScript/JavaScript type checking library providing functions to check data types, collections, primitives, and built-in objects

v0.4.0 URL: https://unpkg.com/payload-is@0.4.0/lib/commonjs/index.cjs

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typescript javascript type-check type-guard validation array object primitive collections data-types type-testing

@lukemorales/jest-type-matchers

Custom jest matchers to test the state of your types

v0.2.2 URL: https://unpkg.com/@lukemorales/jest-type-matchers@0.2.2/dist/index.js

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jest matchers jest-matchers custom-matcher custom-jest-matcher extend test testing assertions typescript types type-assertions type-testing

its.js

small type testing lib for Node.js and the Browser

v1.2.0 URL: https://unpkg.com/its.js@1.2.0/is.js

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typetesting is.js es6 testing type-testing

is-it.js

small type testing lib for Node.js and the Browser

v1.1.1 URL: https://unpkg.com/is-it.js@1.1.1/is.js

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typetesting is.js es6 testing type-testing

types-testing

Test TypeScript types at test runner runtime - Works seamlessly with Jest, Vitest, and Bun.

v1.0.0 URL: https://unpkg.com/types-testing@1.0.0

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typescript type-definitions types test unit-test types-testing type-testing bun jest ts-jest vitest tsd expectType toBe toBeAny toBeNever toBeUnknown toExtends toAssignable