1 | 'use strict';
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2 |
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3 | var callBound = require('call-bind/callBound');
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4 |
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5 | var $TypeError = require('es-errors/type');
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6 |
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7 | var Get = require('./Get');
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8 | var HasProperty = require('./HasProperty');
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9 | var ToString = require('./ToString');
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10 | var Type = require('./Type');
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11 |
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12 | var isAbstractClosure = require('../helpers/isAbstractClosure');
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13 | var isInteger = require('../helpers/isInteger');
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14 |
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15 | var $push = callBound('Array.prototype.push');
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16 | var $sort = callBound('Array.prototype.sort');
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17 |
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18 | // https://262.ecma-international.org/14.0/#sec-sortindexedproperties
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19 |
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20 | module.exports = function SortIndexedProperties(obj, len, SortCompare, holes) {
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21 | if (Type(obj) !== 'Object') {
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22 | throw new $TypeError('Assertion failed: Type(obj) is not Object');
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23 | }
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24 | if (!isInteger(len) || len < 0) {
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25 | throw new $TypeError('Assertion failed: `len` must be an integer >= 0');
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26 | }
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27 | if (!isAbstractClosure(SortCompare) || SortCompare.length !== 2) {
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28 | throw new $TypeError('Assertion failed: `SortCompare` must be an abstract closure taking 2 arguments');
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29 | }
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30 | if (holes !== 'skip-holes' && holes !== 'read-through-holes') {
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31 | throw new $TypeError('Assertion failed: `holes` must be either `skip-holes` or `read-through-holes`');
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32 | }
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33 |
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34 | var items = []; // step 1
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35 |
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36 | var k = 0; // step 2
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37 |
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38 | while (k < len) { // step 3
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39 | var Pk = ToString(k);
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40 | var kRead = holes === 'skip-holes' ? HasProperty(obj, Pk) : true; // step 3.b - 3.c
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41 | if (kRead) { // step 3.d
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42 | var kValue = Get(obj, Pk);
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43 | $push(items, kValue);
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44 | }
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45 | k += 1; // step 3.e
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46 | }
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47 |
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48 | $sort(items, SortCompare); // step 4
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49 |
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50 | return items; // step 5
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51 | };
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