like ts-node, but uses esbuild.

An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.

Next-generation ES module bundler

Detect Node.JS (as opposite to browser environment). ESM modification

TypeScript definitions for es-aggregate-error

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

A simple cache for a few of the JS Error constructors.

ES Object-related atoms: Object, ToObject, RequireObjectCoercible

A helper to optimistically set Symbol.toStringTag, when possible.

`Object.defineProperty`, but not IE 8's broken one.

An env-agnostic serializer and deserializer with recursion ability and types beyond JSON, based on the HTML structured clone algorithm.

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.

Maintained replacement for ESLint's deprecated SourceCode#getJSDocComment along with other jsdoc utilities

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

Lexes ES modules returning their import/export metadata

Helper package to shim a method into `Array.prototype[Symbol.unscopables]`

CLI for Jasmine, a simple JavaScript testing framework for browsers and Node

Create aliases of directories and register custom module paths