@urql/devtools/src/utils/hash.ts

The official exchange for use with Urql Devtools

// When we have separate strings it's useful to run a progressive
// version of djb2 where we pretend that we're still looping over
// the same string
export const phash = (h: number, x: string): number => {
  h = h | 0;
  for (let i = 0, l = x.length | 0; i < l; i++) {
    h = (h << 5) + h + x.charCodeAt(i);
  }

  return h;
};

// This is a djb2 hashing function
export const hash = (x: string): number => phash(5381 | 0, x) >>> 0;