react-native-media-query/hash.js

Media queries for react-native and react-native-web

/* @flow */

// a simple djb2 hash based on hash-string:
// https://github.com/MatthewBarker/hash-string/blob/master/source/hash-string.js
// returns a hex-encoded hash
export default function hash(text) {
  if (!text) {
    return "";
  }

  let hashValue = 5381;
  let index = text.length - 1;

  while (index) {
    hashValue = (hashValue * 33) ^ text.charCodeAt(index);
    index -= 1;
  }

  return (hashValue >>> 0).toString(16);
}