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Get callsites from the V8 stack trace API

ECMAScript AST recursive visitor

Buffers events from a stream until you are ready to handle them.

Array#isArray for older browsers

Use node's fs.realpath, but fall back to the JS implementation if the native one fails

Make a function mimic another one

Resolve any installed ES6 compatible promise

Turn a function into an `http.Agent` instance

Returns true if a string has an extglob.

JSON parse & stringify that supports binary via bops & base64

**Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api).

Build chainable fluent interfaces the easy way... with a freakin' chainsaw!

Throttle a function to limit its execution rate

High-priority task queue for Node.js and browsers

delay the evaluation of a paramless async function and cache the result

generator async control flow goodness

Try to guess if your terminal supports unicode

Allows users to use generators in order to write common functions that can be both sync or async.

Zero CPU overhead, zero dependency, true event-loop blocking sleep