ESModule distribution of the famous cycle.js from Douglas Crockford.
Encode/decode circular structures for converting to and from JSON.
A complete implementation of Protocol Buffers in TypeScript, suitable for web browsers and Node.js.
An env-agnostic serializer and deserializer with recursion ability and types beyond JSON, based on the HTML structured clone algorithm.
A simple cache for a few of the JS Error constructors.
Repair broken JSON documents
A helper to optimistically set Symbol.toStringTag, when possible.
ES Object-related atoms: Object, ToObject, RequireObjectCoercible
Creates Zod types from JSON Schema at runtime
`Object.defineProperty`, but not IE 8's broken one.
ECMAScript spec abstract operations.
Maintained replacement for ESLint's deprecated SourceCode#getJSDocComment along with other jsdoc utilities
ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
Helper package to shim a method into `Array.prototype[Symbol.unscopables]`
An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.
A simple, lightweight JavaScript API for handling cookies
An ES2019 spec-compliant `Array.prototype.flatMap` shim/polyfill/replacement that works as far down as ES3.
ES5 spec-compliant shim for String.prototype.trim
ES2019 spec-compliant String.prototype.trimEnd shim.
A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.
ES2019 spec-compliant String.prototype.trimStart shim.
ES6 spec-compliant RegExp.prototype.flags shim.
A tiny (240B to 501B) and fast utility to "deep clone" Objects, Arrays, Dates, RegExps, and more!
An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible