type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

An arbitrary-precision Decimal type for JavaScript.

Generate hashes from javascript objects in node and the browser.

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

Does a shallow comparison of two objects, returning false if the keys or values differ.

Run a function exactly one time

Define a lazily evaluated property on an object

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

A tiny and fast selection algorithm in JavaScript.

Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

A trie implementation that maps keys to objects for rapid retrieval by phrases. Most common use will be for typeahead searches.

Test if a value is an object.

Return a partial object copy excluding specified keys.

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

Test if a value is object-like.

Implements performance.now (based on process.hrtime).

Check if a stream has ended

A noop logger that conforms to the Log4j interface for modules to stub out internal logging

Delete nested properties from an object using dot notation.

Fast (and loose) selective `process.env` replacer using js-tokens instead of an AST