ponyfill.d.ts 2.0 KB

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  1. /**
  2. * @license
  3. * Copyright 2018 Google Inc.
  4. *
  5. * Permission is hereby granted, free of charge, to any person obtaining a copy
  6. * of this software and associated documentation files (the "Software"), to deal
  7. * in the Software without restriction, including without limitation the rights
  8. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  9. * copies of the Software, and to permit persons to whom the Software is
  10. * furnished to do so, subject to the following conditions:
  11. *
  12. * The above copyright notice and this permission notice shall be included in
  13. * all copies or substantial portions of the Software.
  14. *
  15. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21. * THE SOFTWARE.
  22. */
  23. /**
  24. * @fileoverview A "ponyfill" is a polyfill that doesn't modify the global prototype chain.
  25. * This makes ponyfills safer than traditional polyfills, especially for libraries like MDC.
  26. */
  27. export declare function closest(element: Element, selector: string): Element | null;
  28. export declare function matches(element: Element, selector: string): boolean;
  29. /**
  30. * Used to compute the estimated scroll width of elements. When an element is
  31. * hidden due to display: none; being applied to a parent element, the width is
  32. * returned as 0. However, the element will have a true width once no longer
  33. * inside a display: none context. This method computes an estimated width when
  34. * the element is hidden or returns the true width when the element is visble.
  35. * @param {Element} element the element whose width to estimate
  36. */
  37. export declare function estimateScrollWidth(element: Element): number;