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