Function stableObjectHash

packager/src/node-haste/Module.js:442–452

(object)

// use weak map to speed up hash creation of known objects
const knownHashes = new WeakMap();
function stableObjectHash(object) {
  let digest = knownHashes.get(object);
  if (!digest) {
    digest = crypto.createHash('md5')
      .update(jsonStableStringify(object))
      .digest('base64');
    knownHashes.set(object, digest);
  }

  return digest;
}

module.exports = Module;