@dash-ui/styles/dist/module/utils.js

A tiny, powerful, framework-agnostic CSS-in-JS library.

/**
 * An FNV-1a hashing algorithm with a 32-bit offset basis. FNV-1a hashes are designed
 * to be fast while maintaining a low collision rate. The high dispersion rate makes
 * them well-suited for hashing nearly identical strings.
 *
 * @param string - A string you want to hash
 */
export function hash(string) {
  // 32-bit offset basis
  let out = 2166136261;
  let i = 0;
  let len = string.length;

  for (; i < len; ++i) out = (out ^= string.charCodeAt(i)) + (out << 1) + (out << 4) + (out << 7) + (out << 8) + (out << 24);

  return (out >>> 0).toString(36);
}
const minL = /(^|[:;,{}\s])\s+|$/g;
const minR = / +{/g;
export function safeHash(key, hashFn) {
  const hashCache = {};
  let value;
  return string => {
    if (value = hashCache[string]) return value;
    value = hashFn(string.replace(minL, "$1").replace(minR, "{")); // allows class names to start with numbers

    return hashCache[string] = value = !key && !isNaN(value[0]) ? "_" + value : value;
  };
}
export function noop() {}