RFC4122 (v1, v4, and v5) UUIDs

A regular expression to match all Emoji-only symbols as per the Unicode Standard.

Array#isArray for older browsers

Get and robustly cache all JS language-level intrinsics at first require time

Implementation of Function.prototype.bind

Robustly `.call.bind()` a function

string representations of objects in node and the browser

Fast deep equal

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

ECMAScript spec abstract operations.

Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.

Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.

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

An Object.keys replacement, in case Object.keys is not available. From https://github.com/es-shims/es5-shim

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

EventEmitter3 focuses on performance while maintaining a Node.js AND browser compatible interface.

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

Object.prototype.hasOwnProperty.call shortcut

Is this an arguments object? It's a harder question than you think.

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

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

Convert bytes to a human readable string: 1337 → 1.34 kB

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

Positioning library for floating elements: tooltips, popovers, dropdowns, and more

Utilities for all Sentry JavaScript SDKs

Base implementation for all Sentry JavaScript SDKs

Utility package to determine if an `Array.prototype` method properly boxes the callback's receiver and third argument.

Parse and display moments in any timezone.

implementation of crypto for the browser

Official Sentry SDK for browsers

Formats ICU Message strings with number, date, plural, and select placeholders to create localized messages.

Easily measure performance metrics in JavaScript

Sentry hub which handles global state managment.

Pluggable integrations that can be used to enhance JS SDKs

Data-Driven Documents

fork of fast-memoize and support esm

An ES5 spec-compliant `Array.prototype.map` shim/polyfill/replacement that works as far down as ES3.

Iterate any JS iterator. Works robustly in all environments, all versions.

ES Proposal spec-compliant shim for Promise.allSettled

Lightweight fuzzy-search

A simple JavaScript implementation of Dijkstra's single-source shortest-paths algorithm.

QRCode / 2d Barcode api with both server side and client side support using canvas

The complete tooltip, popover, dropdown, and menu solution for the web

Finite State Machines and Statecharts for the Modern Web.

Fast, small color manipulation and conversion for JavaScript

Trap focus within a DOM node.

Parses ICU Message strings into an AST via JavaScript.

Internationalize JS apps. This library provides an API to format dates, numbers, and strings, including pluralization and handling translations.

Underscore-to-camelCase converter (and vice versa) for strings and object keys in JavaScript.

A JavaScript plugin for entering and validating international telephone numbers

number, money and currency formatting library

Asynchronously write javascript, even with document.write.