lib.es2022.string.d.ts 1.1 KB

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  1. /*! *****************************************************************************
  2. Copyright (c) Microsoft Corporation. All rights reserved.
  3. Licensed under the Apache License, Version 2.0 (the "License"); you may not use
  4. this file except in compliance with the License. You may obtain a copy of the
  5. License at http://www.apache.org/licenses/LICENSE-2.0
  6. THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  7. KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
  8. WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
  9. MERCHANTABLITY OR NON-INFRINGEMENT.
  10. See the Apache Version 2.0 License for specific language governing permissions
  11. and limitations under the License.
  12. ***************************************************************************** */
  13. /// <reference no-default-lib="true"/>
  14. interface String {
  15. /**
  16. * Returns a new String consisting of the single UTF-16 code unit located at the specified index.
  17. * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
  18. */
  19. at(index: number): string | undefined;
  20. }