TanTan
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31 lines
689 B
Plaintext
31 lines
689 B
Plaintext
'use strict';
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var $TypeError = require('es-errors/type');
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var forEach = require('../helpers/forEach');
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var isArray = require('../helpers/IsArray');
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// https://262.ecma-international.org/16.0/#sec-setdatasize
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// TODO: when spec enums are unforgeable, uncomment ~EMPTY~ check
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module.exports = function SetDataSize(setData) {
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if (!isArray(setData) && setData !== 'EMPTY') {
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throw new $TypeError('Assertion failed: `setData` must be a List or ~EMPTY~');
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}
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if (setData === 'EMPTY') {
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return 0;
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}
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var count = 0; // step 1
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forEach(setData, function (e, i) { // step 2
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if (i in setData /* && e !== ~EMPTY~ */) {
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count += 1; // step 2.a
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}
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});
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return count; // step 3
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};
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