npm

date

ES spec-compliant `Date` shim/polyfill/replacement that works as far down as ES3

jsonify

JSON without touching any globals

object-define-property

Object.definePropert{y,ies} replacement compatible with old browsers. Extracted from https://github.com/kriskowal/es5-shim

big-integer-max

Given two valid integers in string form, return the larger of the two.

for-each

A better forEach

concat-map

concatenative mapdashery

array.of

A robust & optimized `Array.of` polyfill, based on the ECMAScript 6 specification.

string.prototype.at

An ES-spec-compliant (proposed) String.prototype.at shim/polyfill/replacement that works as far down as ES3

structured-clone

Implements the structured clone algorithm. Clone JSON types, RegExp, Buffers, and Dates, returning a cloned object or a buffer that can be deserialized into a structured clone.

typedarray

TypedArray polyfill for old browsers

number.isnan

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

buffer-equal

return whether two buffers are equal

object-inspect

string representations of objects in node and the browser

array.prototype.findindex

Array.prototype.findIndex ES2015 polyfill.

array.from

A robust & optimized `Array.from` polyfill, based on the ECMAScript 6 specification.

object-is

ES2015-compliant shim for Object.is - differentiates between -0 and +0

is-object

Checks whether a value is an object

testling

write tests for browser code

array-map

`[].map(f)` for older browsers

node-polyglot

Give your JavaScript the ability to speak many languages.

is-core-module

Is this specifier a node.js core module?

json-stable-stringify

deterministic JSON.stringify() with custom sorting to get deterministic hashes from stringified results

defined

return the first argument that is `!== undefined`

deprecations

Given npm module names, get a JSON map of npm version numbers to deprecation messages.

has

Object.prototype.hasOwnProperty.call shortcut