@pivoto/core/src/hash.ts


const MAX = Math.pow(2, 32);

function stringHashCode(str: string) {
	str = str || '';
	let h: number = 0;
	let len = str.length;
	for (let i = 0; i < len; i++) {
		let c = str.charCodeAt(i);
		h = 31 * h + Number(c);
		if (h > MAX) {
			h = h % MAX;
		}
	}
	return h;
}

export function hashCode(obj: any) {
	if (typeof obj === 'string') {
		return stringHashCode(obj);
	}
	return stringHashCode((obj || '').toString());
}