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function makeid(num = 4) {
let result = "";
let characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
var characters9 = characters.length;
for (var i = 0; i < num; i++) {
result += characters.charAt(Math.floor(Math.random() * characters9));
}
return result;
}
module.exports = {makeid};