TypeScript-first schema declaration and validation library with static type inference
An ESnext spec-compliant `Array.prototype.findLast` shim/polyfill/replacement that works as far down as ES3.
Determine if the JS environment has BigInt support.
ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
Helper functions for V8 coverage files.
Determine if a value is an ES6 Symbol or not.
Unbox a boxed JS primitive value.
ECMAScript spec-compliant polyfill/shim for `globalThis`
An ESnext spec-compliant `Array.prototype.findLastIndex` shim/polyfill/replacement that works as far down as ES3.
ES2017 spec-compliant Object.entries shim.
Helper package to shim a method into `Array.prototype[Symbol.unscopables]`
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
ES proposal-spec-compliant Object.fromEntries shim.
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
This plugin adds `TypeScript` support to `eslint-plugin-import`
Is this value an ES BigInt?
A collection of essential TypeScript types
Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Write files in an atomic fashion w/configurable ownership
Determine if a function is a native async function.
`Object.defineProperty`, but not IE 8's broken one.
Pure random number generator written in TypeScript
A pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.
Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.