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  1. 'use strict';
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.getUniquePropertyValues = getUniquePropertyValues;
  6. exports.addValueToArray = addValueToArray;
  7. exports.transformValueToString = transformValueToString;
  8. // Copyright (c) 2016 - 2017 Uber Technologies, Inc.
  9. //
  10. // Permission is hereby granted, free of charge, to any person obtaining a copy
  11. // of this software and associated documentation files (the "Software"), to deal
  12. // in the Software without restriction, including without limitation the rights
  13. // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14. // copies of the Software, and to permit persons to whom the Software is
  15. // furnished to do so, subject to the following conditions:
  16. //
  17. // The above copyright notice and this permission notice shall be included in
  18. // all copies or substantial portions of the Software.
  19. //
  20. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21. // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22. // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23. // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24. // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25. // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26. // THE SOFTWARE.
  27. /**
  28. * Get unique property values from an array.
  29. * @param {Array} arr Array of data.
  30. * @param {string} propertyName Prop name.
  31. * @returns {Array} Array of unique values.
  32. */
  33. function getUniquePropertyValues(arr, accessor) {
  34. var setOfValues = new Set(arr.map(accessor));
  35. return Array.from(setOfValues);
  36. }
  37. /**
  38. * Add zero to the domain.
  39. * @param {Array} arr Add zero to the domain.
  40. * @param {Number} value Add zero to domain.
  41. * @returns {Array} Adjusted domain.
  42. */
  43. function addValueToArray(arr, value) {
  44. var result = [].concat(arr);
  45. if (result[0] > value) {
  46. result[0] = value;
  47. }
  48. if (result[result.length - 1] < value) {
  49. result[result.length - 1] = value;
  50. }
  51. return result;
  52. }
  53. /**
  54. * Transforms a value ( number or date ) to a string.
  55. * @param {Date | number} value The value as date or number.
  56. * @returns {string | number} The value as string.
  57. */
  58. function transformValueToString(value) {
  59. return Object.prototype.toString.call(value) === '[object Date]' ? value.toDateString() : value;
  60. }