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**Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api).
This packages is a collection of utilities and helper functions
Some common prototypes for node.js: string.startsWith(), object.countProperties() and more. Facilities for functional programming with objects: object.forEach(), object.filter(). Functions are added safely using Object.defineProperty().
Tree utilities which provides a full-featured extend and object-cloning facility, and various tools to deal with nested object structures.
A stand-alone types package for Undici
Babel Types is a Lodash-esque utility library for AST nodes
The ultimate javascript content-type utility.
Types for the AWS SDK
TypeScript definitions for @babel/core
TypeScript definitions for express-serve-static-core
Runtime type checking for React props and similar objects.
TypeScript definitions for express
This package contains shared types of Jest's packages.
Merge objects & other types recursively. A simple & small integration.
Node.js utilities and TypeScript definitions for `package.json` and `tsconfig.json`
TypeScript definitions for prop-types
Rapidly create HTML prototypes of GOV.UK services
Design patterns for HMRC frontends
Strip flow type annotations from your output code.
Shared TypeScript definitions for Octokit projects