jest‑wrap provides a fluent, chainable API for adding custom “wrappers” around Jest’s `describe`, `it`/`test` blocks. It lets developers register or ad‑hoc use plugins (named with a `with…` prefix) that inject globals, overrides, and lifecycle hooks (`beforeEach`, `afterAll`, etc.), and supports `.skip()`/`.only()` chaining while remaining ES3‑compatible. The library is aimed at JavaScript test authors who want a declarative, reusable way to set up test environments and shared setup/teardown logic in Jest.
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Support the dependencies of airbnb/jest-wrap
Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.
A better forEach
Implementation of Function.prototype.bind
An ES2015 spec-compliant `Function.prototype.name` shim
Object.prototype.hasOwnProperty.call shortcut
Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.
Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Determine if a value is an ES6 Symbol or not.
Array#isArray for older browsers
string representations of objects in node and the browser
ES2017 spec-compliant Object.entries shim.
The semantic version parser used by npm.
Airbnb's base JS ESLint config, following our styleguide
Import with sanity.
human-readable TAP summarizer
Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use ca
Merge multiple istanbul coverage reports into one
Delightful JavaScript Testing.
A deep deletion module for node (like `rm -rf`)
Ensure that when you `npm publish`, the "latest" tag is only set for the truly latest version.
tap-producing test harness for node and browsers
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