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"use strict";
var typeOf = require("@sinonjs/commons").typeOf;
var forEach = require("@sinonjs/commons").prototypes.array.forEach;
/**
* This helper makes it convenient to create Set instances from a
* collection, an overcomes the shortcoming that IE11 doesn't support
* collection arguments
*
* @private
* @param {Array} array An array to create a set from
* @returns {Set} A set (unique) containing the members from array
*
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
*/
function createSet(array) {
if (arguments.length > 0 && !Array.isArray(array)) {
throw new TypeError(
"createSet can be called with either no arguments or an Array"
);
}
var items = typeOf(array) === "array" ? array : [];
var set = new Set();
forEach(items, function (item) {
set.add(item);
});
return set;
}
module.exports = createSet;