A simple common HTTP client specifically for Google APIs and services.

Is this specifier a node.js core module?

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

Returns an array of Typed Array names that are available in the current environment

Determine if a function is a native generator function.

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

Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

Gets the description of a Symbol. Handles `Symbol()` vs `Symbol('')` properly when possible.

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

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

string representations of objects in node and the browser

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

Determine if the JS environment has BigInt support.

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

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

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

ECMAScript spec abstract operations.

Unbox a boxed JS primitive value.

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

Standard Subresource Integrity library -- parses, serializes, generates, and verifies integrity metadata according to the SRI spec.