Simple ECMAScript feature detection module
Detect Node.JS (as opposite to browser environment). ESM modification
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A small library to detect which features of WebAssembly are supported in your current browser.
A JavaScript parser built from the Hermes engine
Lexes CommonJS modules, returning their named exports metadata
ESLint plugin about ECMAScript syntactic features.
jscodeshift codemod that convert CommonJS(require/exports) to ES Modules(import/export) for JavaScript/TypeScript
Native-ESM powered web dev build tool
Improved typeof detection for node.js and the browser.
A simple cache for a few of the JS Error constructors.
Detect the dominant newline character of a string
A helper to optimistically set Symbol.toStringTag, when possible.
ES Object-related atoms: Object, ToObject, RequireObjectCoercible
`Object.defineProperty`, but not IE 8's broken one.
ECMAScript spec abstract operations.
ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.
Helper package to shim a method into `Array.prototype[Symbol.unscopables]`
Node.js module to detect the C standard library (libc) implementation family and version
An ES2019 spec-compliant `Array.prototype.flatMap` shim/polyfill/replacement that works as far down as ES3.
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.
ESLint plugin about ECMAScript syntactic features.