implementation.js 4.3 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133
  1. 'use strict';
  2. var $TypeError = require('es-errors/type');
  3. var Call = require('es-abstract/2024/Call');
  4. var CreateDataPropertyOrThrow = require('es-abstract/2024/CreateDataPropertyOrThrow');
  5. var Get = require('es-abstract/2024/Get');
  6. var GetIteratorFlattenable = require('../aos/GetIteratorFlattenable');
  7. var GetOptionsObject = require('../aos/GetOptionsObject');
  8. var IfAbruptCloseIterators = require('../aos/IfAbruptCloseIterators');
  9. var IsAccessorDescriptor = require('es-abstract/2024/IsAccessorDescriptor');
  10. var IsDataDescriptor = require('es-abstract/2024/IsDataDescriptor');
  11. var IteratorZip = require('../aos/IteratorZip');
  12. var OrdinaryObjectCreate = require('es-abstract/2024/OrdinaryObjectCreate');
  13. var ThrowCompletion = require('es-abstract/2024/ThrowCompletion');
  14. var ToPropertyDescriptor = require('es-abstract/2024/ToPropertyDescriptor');
  15. var Type = require('es-abstract/2024/Type');
  16. var forEach = require('es-abstract/helpers/forEach');
  17. var ownKeys = require('es-abstract/helpers/OwnPropertyKeys');
  18. var gOPD = require('gopd');
  19. module.exports = function zipKeyed(iterables) {
  20. if (this instanceof zipKeyed) {
  21. throw new $TypeError('`Iterator.zip` is not a constructor');
  22. }
  23. if (Type(iterables) !== 'Object') {
  24. throw new $TypeError('`iterables` must be an Object'); // step 1
  25. }
  26. var options = GetOptionsObject(arguments.length > 1 ? arguments[1] : undefined); // step 2
  27. var mode = Get(options, 'mode'); // step 3
  28. if (typeof mode === 'undefined') {
  29. mode = 'shortest'; // step 4
  30. }
  31. if (mode !== 'shortest' && mode !== 'longest' && mode !== 'strict') {
  32. throw new $TypeError('`mode` must be one of "shortest", "longest", or "strict"'); // step 5
  33. }
  34. var paddingOption; // step 6
  35. if (mode === 'longest') { // step 7
  36. paddingOption = Get(options, 'padding'); // step 7.a
  37. if (typeof paddingOption !== 'undefined' && Type(paddingOption) !== 'Object') {
  38. throw new $TypeError('`padding` option must be an Object'); // step 7.b
  39. }
  40. }
  41. var iters = []; // step 8
  42. var padding = []; // step 9
  43. var allKeys = ownKeys(iterables); // step 10
  44. var keys = []; // step 11
  45. forEach(allKeys, function (key) { // step 12
  46. var desc;
  47. try {
  48. desc = ToPropertyDescriptor(gOPD(iterables, key)); // step 12.a
  49. } catch (e) {
  50. IfAbruptCloseIterators(ThrowCompletion(e), iters); // step 12.b
  51. }
  52. if (typeof desc !== 'undefined' && desc['[[Enumerable]]'] === true) { // step 12.c
  53. var value; // step 12.c.i
  54. if (IsDataDescriptor(desc)) { // step 12.c.ii
  55. value = desc['[[Value]]']; // step 12.c.ii.1
  56. } else {
  57. if (!IsAccessorDescriptor(desc)) {
  58. throw new $TypeError('Assertion failed: IsAccessorDescriptor(desc) is not true'); // step 12.c.ii.1
  59. }
  60. var getter = desc['[[Get]]']; // step 12.c.iii.2
  61. if (typeof getter !== 'undefined') { // step 12.c.iii.3
  62. var getterResult;
  63. try {
  64. getterResult = Call(getter, iterables); // step 12.c.iii.3.a
  65. } catch (e) {
  66. // step 12.c.iii.3.b
  67. // 2. IfAbruptCloseIterators(e, iters).
  68. }
  69. value = getterResult; // step 12.c.iii.3.c
  70. }
  71. }
  72. if (typeof value !== 'undefined') { // step 12.c.iv
  73. keys[keys.length] = key; // step 12.c.iv.1
  74. var iter;
  75. try {
  76. iter = GetIteratorFlattenable(value, 'REJECT-STRINGS'); // step 12.c.iv.2
  77. } catch (e) {
  78. IfAbruptCloseIterators(ThrowCompletion(e), iters); // step 12.c.iv.3
  79. }
  80. iters[iters.length] = iter; // step 12.c.iv.4
  81. }
  82. }
  83. });
  84. var iterCount = iters.length; // step 13
  85. if (mode === 'longest') { // step 14
  86. if (typeof paddingOption === 'undefined') { // step 14.a
  87. for (var j = 0; j < iterCount; j += 1) { // step 14.a.i
  88. padding[padding.length] = void undefined; // step 14.a.i.1
  89. }
  90. } else { // step 14.b
  91. forEach(keys, function (key) { // step 14.b.i
  92. var value;
  93. try {
  94. value = Get(paddingOption, key); // step 14.b.i.1
  95. } catch (e) {
  96. IfAbruptCloseIterators(ThrowCompletion(e), iters); // step 14.b.i.2
  97. }
  98. padding[padding.length] = value; // step 14.b.i.3
  99. });
  100. }
  101. }
  102. // eslint-disable-next-line no-sequences
  103. var finishResults = (0, function (results) { // step 15
  104. var obj = OrdinaryObjectCreate(null); // step 15.a
  105. for (var i = 0; i < iterCount; i += 1) { // step 15.b
  106. CreateDataPropertyOrThrow(obj, keys[i], results[i]); // step 15.b.i
  107. }
  108. return obj; // step 15.c
  109. });
  110. return IteratorZip(iters, mode, padding, finishResults); // step 16
  111. };