Function fingerprint

packages/compiler/src/i18n/digest.ts:208–222

(str: string)

 * https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/GoogleJsMessageIdGenerator.java
 */
export function fingerprint(str: string): bigint {
  textEncoder ??= new TextEncoder();
  const utf8 = textEncoder.encode(str);
  const view = new DataView(utf8.buffer, utf8.byteOffset, utf8.byteLength);

  let hi = hash32(view, utf8.length, 0);
  let lo = hash32(view, utf8.length, 102072);

  if (hi == 0 && (lo == 0 || lo == 1)) {
    hi = hi ^ 0x130f9bef;
    lo = lo ^ -0x6b5f56d8;
  }

  return (BigInt.asUintN(32, BigInt(hi)) << BigInt(32)) | BigInt.asUintN(32, BigInt(lo));
}

export function computeMsgId(msg: string, meaning: string = ''): string {
  let msgFingerprint = fingerprint(msg);