Implementation of Function.prototype.bind

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

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

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

ES2019 spec-compliant String.prototype.trimStart shim.

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

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

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

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

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

ES6 spec-compliant RegExp.prototype.flags shim.

Is this specifier a node.js core module?

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

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

Does this JS environment support the `name` property on functions?

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

Determine if a function is a native generator function.

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

Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

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