assert file utilities

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

typesafe assertion library for TypeScript 3.7+

The assert module from Node.js, for the browser.

assert with status codes

Power Assert output formatter

filepath renderer for power-assert context

minimalistic-assert ===

The URI implementation that is used by VS Code and its extensions

Helper function for exhaustive checks of discriminated unions in TypeScript

Resolve npm package details, like name and base path, given an absolute path to a file inside a package

Parses, serializes, and manipulates MIME types, according to the WHATWG MIME Sniffing Standard

Type check values

correct invalid SPDX expressions

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

format power-assert context

Extra assertions on top of node's assert module

Is this value a JS ArrayBuffer?

Which kind of boxed JS primitive is this?

Is this value a JS SharedArrayBuffer?