Proxy-backed custom error message instead of `TypeError: x is undefined`
Jest transform stub
Stub transport for Nodemailer
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Synchronous Promise stubbing for Sinon.JS
sinon library extension to stub whole object and interfaces
Accurate and predictable testing of requestAnimationFrame and cancelAnimationFrame
Exports child_process.spawnSync
Easy method stubber.
A testrpc-sc stub for solidity-coverage >= 0.7.0 (which errors when launched.)
Standalone node server and express integration for @pollyjs
ES2015 `Object.assign()` ponyfill
An Object.keys replacement, in case Object.keys is not available. From https://github.com/es-shims/es5-shim
A simple mock for requestAnimationFrame testing with fake timers.
Deep diffs two objects, including nested structures of arrays and objects, and return the difference.
Returns true if an object was created by the `Object` constructor, or Object.create(null).
Returns true if a value is a plain object, array or function.
Copy static properties, prototype properties, and descriptors from one object to another.
Recursive object extending
Node API compliant querystring module for IE9 and above
Call a specified method on each value in the given object.
deterministic `JSON.stringify()` - a faster version of substack's json-stable-strigify without jsonify
Shared utilities and constants between @pollyjs packages
Caseless object set/get/has, very useful when working with HTTP headers.