Determine if the current node version supports the `--preserve-symlinks` flag.

Helper functions around Function call/apply/bind, for use in `call-bind`

ES2019 spec-compliant String.prototype.trimStart shim.

Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.

rehype plugin to reparse the tree (and raw nodes)

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

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

micromark extension to support frontmatter (YAML, TOML, etc)

Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.

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

Universal pluggable logging utility

An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible

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

An ES2019 spec-compliant `Array.prototype.flat` shim/polyfill/replacement that works as far down as ES3.

Command-line interface for all things Cloudflare Workers

High-speed HTTP logger for Node.js

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

Get repository user and project information from package.json file contents.

mdast extension to parse and serialize frontmatter (YAML, TOML, etc)

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