util.js 2.1 KB

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  1. 'use strict';
  2. exports.__esModule = true;
  3. exports.noop = noop;
  4. exports.hasOwn = hasOwn;
  5. exports.toObject = toObject;
  6. exports.getPropByPath = getPropByPath;
  7. var hasOwnProperty = Object.prototype.hasOwnProperty;
  8. function noop() {};
  9. function hasOwn(obj, key) {
  10. return hasOwnProperty.call(obj, key);
  11. };
  12. function extend(to, _from) {
  13. for (var key in _from) {
  14. to[key] = _from[key];
  15. }
  16. return to;
  17. };
  18. function toObject(arr) {
  19. var res = {};
  20. for (var i = 0; i < arr.length; i++) {
  21. if (arr[i]) {
  22. extend(res, arr[i]);
  23. }
  24. }
  25. return res;
  26. };
  27. var getValueByPath = exports.getValueByPath = function getValueByPath(object, prop) {
  28. prop = prop || '';
  29. var paths = prop.split('.');
  30. var current = object;
  31. var result = null;
  32. for (var i = 0, j = paths.length; i < j; i++) {
  33. var path = paths[i];
  34. if (!current) break;
  35. if (i === j - 1) {
  36. result = current[path];
  37. break;
  38. }
  39. current = current[path];
  40. }
  41. return result;
  42. };
  43. function getPropByPath(obj, path, strict) {
  44. var tempObj = obj;
  45. path = path.replace(/\[(\w+)\]/g, '.$1');
  46. path = path.replace(/^\./, '');
  47. var keyArr = path.split('.');
  48. var i = 0;
  49. for (var len = keyArr.length; i < len - 1; ++i) {
  50. if (!tempObj && !strict) break;
  51. var key = keyArr[i];
  52. if (key in tempObj) {
  53. tempObj = tempObj[key];
  54. } else {
  55. if (strict) {
  56. throw new Error('please transfer a valid prop path to form item!');
  57. }
  58. break;
  59. }
  60. }
  61. return {
  62. o: tempObj,
  63. k: keyArr[i],
  64. v: tempObj ? tempObj[keyArr[i]] : null
  65. };
  66. };
  67. var generateId = exports.generateId = function generateId() {
  68. return Math.floor(Math.random() * 10000);
  69. };
  70. var valueEquals = exports.valueEquals = function valueEquals(a, b) {
  71. // see: https://stackoverflow.com/questions/3115982/how-to-check-if-two-arrays-are-equal-with-javascript
  72. if (a === b) return true;
  73. if (!(a instanceof Array)) return false;
  74. if (!(b instanceof Array)) return false;
  75. if (a.length !== b.length) return false;
  76. for (var i = 0; i !== a.length; ++i) {
  77. if (a[i] !== b[i]) return false;
  78. }
  79. return true;
  80. };