🔬 Assertion and error handling

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Assert that TypeScript finds an error in your test files.

Simple and lightweight javascript object schema validation library.

This tool gives handy utilities to test AWS CDK Stack.

Typescript assert for exhaustive switch blocks

A Jest matcher for image comparisons based on pixelmatch. Can also be used with Mocha. Useful for visual regression testing.

TypeScript helper. Assert if a value is neither null nor undefined.

A large collection of generic TypeScript assert functions which can be used in unit tests but also in production code to validate inputs for example.

Themis is a validation and processing library that helps you always make sure your data is correct.

assert.deepStrictEqual for JSON object.

A type assert library

Composable and checkable JavaScript (and TypeScript) data structure

A collection of GitHub actions that allow you to do assertions in other GitHub actions or workflows

Type assertion testing library for TypeScript

A statically typed subset of chai assertions

Abstract structure for JavaScript data validation

Simple functionality alternative to check data type references such as typeof and instanceof.

🔥 Micro TypeScript assertion (test) library.

Assertion collection for JavaScript data