1 | 'use strict';
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2 |
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3 | var toStr = Object.prototype.toString;
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4 |
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5 | var isPrimitive = require('./helpers/isPrimitive');
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6 |
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7 | var isCallable = require('is-callable');
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8 |
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9 | /** @type {{ [k in `[[${string}]]`]: (O: { toString?: unknown, valueOf?: unknown }, actualHint?: StringConstructor | NumberConstructor) => null | undefined | string | symbol | number | boolean | bigint; }} */
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10 | // http://ecma-international.org/ecma-262/5.1/#sec-8.12.8
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11 | var ES5internalSlots = {
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12 | '[[DefaultValue]]': function (O) {
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13 | var actualHint;
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14 | if (arguments.length > 1) {
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15 | actualHint = arguments[1];
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16 | } else {
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17 | actualHint = toStr.call(O) === '[object Date]' ? String : Number;
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18 | }
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19 |
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20 | if (actualHint === String || actualHint === Number) {
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21 | /** @type {('toString' | 'valueOf')[]} */
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22 | var methods = actualHint === String ? ['toString', 'valueOf'] : ['valueOf', 'toString'];
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23 | var value, i;
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24 | for (i = 0; i < methods.length; ++i) {
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25 | var method = methods[i];
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26 | if (isCallable(O[method])) {
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27 | // eslint-disable-next-line no-extra-parens
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28 | value = /** @type {Function} */ (O[method])();
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29 | if (isPrimitive(value)) {
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30 | return value;
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31 | }
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32 | }
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33 | }
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34 | throw new TypeError('No default value');
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35 | }
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36 | throw new TypeError('invalid [[DefaultValue]] hint supplied');
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37 | }
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38 | };
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39 |
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40 | /** @type {import('./es5')} */
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41 | // http://ecma-international.org/ecma-262/5.1/#sec-9.1
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42 | module.exports = function ToPrimitive(input) {
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43 | if (isPrimitive(input)) {
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44 | return input;
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45 | }
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46 | if (arguments.length > 1) {
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47 | // eslint-disable-next-line no-extra-parens
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48 | return ES5internalSlots['[[DefaultValue]]'](/** @type {object} */ (input), arguments[1]);
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49 | }
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50 | // eslint-disable-next-line no-extra-parens
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51 | return ES5internalSlots['[[DefaultValue]]'](/** @type {object} */ (input));
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52 | };
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