utils.d.ts 1.4 KB

1234567891011121314151617181920212223242526272829303132
  1. /**
  2. * Copyright (C) 2016-2020 Michael Kourlas
  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. * http://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. export declare function isUndefined(val: unknown): val is undefined;
  17. export declare function isNull(val: unknown): val is null;
  18. export declare function isObject(val: unknown): val is Record<string, unknown>;
  19. export declare function isArray(val: unknown): val is unknown[];
  20. export declare function isFunction(val: unknown): val is Function;
  21. export declare function isSet(val: unknown): val is Set<unknown>;
  22. export declare function isMap(val: unknown): val is Map<unknown, unknown>;
  23. /**
  24. * Returns a string representation of the specified value, as given by the
  25. * value's toString() method (if it has one) or the global String() function
  26. * (if it does not).
  27. *
  28. * @param value The value to convert to a string.
  29. *
  30. * @returns A string representation of the specified value.
  31. */
  32. export declare function stringify(value: any): string;