**path‑source** provides a tiny, universal API for reading data as a WHATWG readable‑stream source – in Node it opens a file, and in the browser it fetches a URL (using streaming fetch when possible, otherwise XHR). It returns a promise that resolves to a source object with `read()` and `cancel()` methods, letting developers consume binary chunks (Uint8Array/Buffer) in a consistent, stream‑based way across environments. Ideal for JavaScript developers who need lightweight, cross‑platform file or network streaming without pulling in larger libraries.