svelte/src/parse/utils/hash.ts

// https://github.com/darkskyapp/string-hash/blob/master/index.js
export default function hash ( str: string ) :number {
	let hash = 5381;
	let i = str.length;

	while ( i-- ) hash = ( hash * 33 ) ^ str.charCodeAt( i );
	return hash >>> 0;
}