Results for assert-js

Javascript simple assertion library with no dependencies.

A better assert

test helper to assert JS AST equality.

Extra assertions on top of node's assert module

A robust, ES3 compatible, "has own property" predicate.

Is this value a JS ArrayBuffer?

Is this specifier a node.js core module?

Is this value a JS SharedArrayBuffer?

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.

Which kind of boxed JS primitive is this?

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

What is the type of this builtin JS value?

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

Robustly get the length of a Typed Array

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

Synchronous validation of a path existing either as a file or as a directory.

Robustly get the byte offset of a Typed Array

correct invalid SPDX expressions

Robustly get the byte length of a Typed Array

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

Does this environment have the ability to get the [[Prototype]] of an object on creation with `__proto__`?

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

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