inspect-js/is-equal

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.

My shareable eslint config

Use `npx aud` instead of `npm audit`, whether you have a lockfile or not!

Command line tool for generating a changelog from git tags and commit history

Standard library

ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines

A better forEach

Detect if we were run as a result of `npm publish`

Function that returns an arbitrary arrow function, or undefined if arrow function syntax is unsupported.

Command line tool for creating or updating a .npmignore file based on .gitignore.

the Istanbul command line interface

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

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

Get an iterator for any JS language value. Works robustly across all environments, all versions.

ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

Does this JS environment support the `name` property on functions?

Determine if the JS environment has Symbol support. Supports spec, or shams.

A robust, ES3 compatible, "has own property" predicate.

Determine if the JS environment has BigInt support.

Determine if a function is an ES6 arrow function or not.

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

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

Is this value an ES BigInt?

Determine if a function is a native generator function.

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

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

An ES5 mostly-spec-compliant `Object.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible

Which kind of boxed JS primitive is this?

Fixtures of ES values, for testing purposes

Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.