@alwatr/hash-string/dist/main.mjs

A simple utility to generate a hash string.

/* @alwatr/hash-string v5.2.0 */

// src/main.ts
import { packageTracer } from "@alwatr/package-tracer";

// src/djb2-hash.ts
function djb2Hash(str) {
  let hashValue = 5381;
  for (let i = str.length - 1; i >= 0; i--) {
    hashValue = (hashValue << 5) + hashValue ^ str.charCodeAt(i);
  }
  return hashValue >>> 0;
}

// src/nano-hash.ts
function nanoHash(str, prefix, repeat = 1) {
  if (repeat < 1) {
    throw new Error("The repeat parameter must be greater than or equal to 1");
  }
  let hash1 = 3735928559;
  let hash2 = 1103547991;
  if (typeof str === "number") {
    str = str.toString();
  }
  const len = str.length;
  for (let i = 0; i < len; i++) {
    const char = str.charCodeAt(i);
    hash1 = Math.imul(hash1 ^ char, 2654435761);
    hash2 = Math.imul(hash2 ^ char, 1597334677);
  }
  hash1 = Math.imul(hash1 ^ hash1 >>> 16, 2246822507) ^ Math.imul(hash2 ^ hash2 >>> 13, 3266489909);
  hash2 = Math.imul(hash2 ^ hash2 >>> 16, 2246822507) ^ Math.imul(hash1 ^ hash1 >>> 13, 3266489909);
  const result = prefix + (hash1 >>> 0).toString(36) + (hash2 >>> 0).toString(36);
  if (repeat === 1) {
    return result;
  } else {
    return nanoHash(result, prefix, repeat - 1);
  }
}

// src/main.ts
__dev_mode__: packageTracer.add("@alwatr/hash-string", "5.2.0");
export {
  djb2Hash,
  nanoHash
};
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