Mock http requests made using fetch

Add a set of custom matchers for Immutable related checks.

Lightning Web Security ESLint rule maker utilities

The test infrastructure is complicated because some tests are meant to be run once, and some tests are meant to be run once for each dialect, or once for each dialect from a set of dialects. Work is happening to clean this up and clarify how to deal with

Custom matchers and snapshot serializers to enhance vitest

TypeScript definitions for jasmine-matchers

Node filesystem path toolkit for discovery, matching, ignoring, scanning, and watching.

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Custom Jest matchers for the Console object.

Chain Jest matchers together to create one powerful assertion

Hardhat TypeScript plugin boilerplate

Adds jest matchers for watching console methods.

Karma plugin to inject Jasmine DOM Matchers for Jasmine.

Parses and evaluates package version policy specs and produces package-version matchers

Jasmine diff matchers

Miscellaneous custom Jest compatible matchers

Custom Jest snapshot matchers that use prettyhtml to format strings.

date / time comparison matchers for chai

Add a set of custom matchers for HTML and CSS related checks, using jQuery.

Mock websockets and assert complex websocket interactions with Jest