64 lines
1.6 KiB
JavaScript
64 lines
1.6 KiB
JavaScript
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'use strict';
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var callBound = require('call-bind/callBound');
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var $TypeError = require('es-errors/type');
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var DeletePropertyOrThrow = require('./DeletePropertyOrThrow');
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var Get = require('./Get');
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var HasProperty = require('./HasProperty');
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var Set = require('./Set');
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var ToString = require('./ToString');
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var Type = require('./Type');
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var isAbstractClosure = require('../helpers/isAbstractClosure');
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var isInteger = require('../helpers/isInteger');
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var $push = callBound('Array.prototype.push');
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var $sort = callBound('Array.prototype.sort');
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// https://262.ecma-international.org/13.0/#sec-sortindexedproperties
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module.exports = function SortIndexedProperties(obj, len, SortCompare) {
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if (Type(obj) !== 'Object') {
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throw new $TypeError('Assertion failed: Type(obj) is not Object');
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}
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if (!isInteger(len) || len < 0) {
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throw new $TypeError('Assertion failed: `len` must be an integer >= 0');
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}
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if (!isAbstractClosure(SortCompare) || SortCompare.length !== 2) {
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throw new $TypeError('Assertion failed: `SortCompare` must be an abstract closure taking 2 arguments');
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}
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var items = []; // step 1
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var k = 0; // step 2
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while (k < len) { // step 3
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var Pk = ToString(k);
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var kPresent = HasProperty(obj, Pk);
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if (kPresent) {
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var kValue = Get(obj, Pk);
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$push(items, kValue);
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}
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k += 1;
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}
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var itemCount = items.length; // step 4
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$sort(items, SortCompare); // step 5
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var j = 0; // step 6
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while (j < itemCount) { // step 7
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Set(obj, ToString(j), items[j], true);
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j += 1;
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}
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while (j < len) { // step 8
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DeletePropertyOrThrow(obj, ToString(j));
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j += 1;
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}
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return obj; // step 9
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};
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