generateUniqueID.js 884 B

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  1. /*
  2. * Copyright 2020 Google LLC
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * https://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. /**
  17. * Performantly generate a unique, 30-char string by combining a version
  18. * number, the current timestamp with a 13-digit number integer.
  19. * @return {string}
  20. */
  21. export const generateUniqueID = () => {
  22. return `v1-${Date.now()}-${Math.floor(Math.random() * (9e12 - 1)) + 1e12}`;
  23. };