Showing 21-40 of 221,270 packages
A robust, ES3 compatible, "has own property" predicate.
Power Assert in JavaScript
Same as JSON but with added support for `Date`, `undefined`, `Map`, `Set`, and more.
Which kind of boxed JS primitive is this?
What is the type of this builtin JS value?
Is this value a JS SharedArrayBuffer?
Check if an environment is little endian.
Power Assert output formatter
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.
`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.
Generic options parameter handling.
uvu is an extremely fast and lightweight test runner for Node.js and the browser
A helper to optimistically set Symbol.toStringTag, when possible.
Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag
Robustly get the length of a Typed Array
Test if a double-precision floating-point numeric value is NaN.
Test if a value is a Uint8Array.
Test if a value is a Uint16Array.
`Object.defineProperty`, but not IE 8's broken one.
ES Object-related atoms: Object, ToObject, RequireObjectCoercible