Is this value a JS ArrayBuffer?

Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

OpenTelemetry Node SDK provides automatic telemetry (tracing, metrics, etc) for Node.js applications

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

Get the byte length of an ArrayBuffer, even in engines without a `.byteLength` method.

Standard library

Array#isArray for older browsers

A simple MD5 hash function for JavaScript supports UTF-8 encoding.

Datadog IAST tant tracking support for NodeJS

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

Robustly get the byte length of a Typed Array

A utility to retry failed async methods.

YAML 1.2 parser and serializer

Robustly get the byte offset of a Typed Array

What is the type of this builtin JS value?

ECMAScript scope analyzer for ESLint

Get the byteLength out of a DataView, robustly.

Polyfills for React Native.

Is this value a JS DataView? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

Get the byteOffset out of a DataView, robustly.