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export namespace Utils {
    "use strict";

    function uuid(): string {
        const random: (multiplier: number) => number = (multiplier: number) => {
            return Math.floor(Math.random() * multiplier);
        };

        const hexadecimal: (index: number) => string = (index: number) => {
            return ((index === 19) ? random(4) + 8 : random(16)).toString(16);
        };

        const nexttoken: (index: number) => string = (index: number) => {
            if (index === 8 || index === 13 || index === 18 || index === 23) {
                return "-";
            } else if (index === 14) {
                return "4";
            } else {
                return hexadecimal(index);
            }
        };

        const generate: () => string = () => {
            let uuid: string = "";

            while ((uuid.length) < 36) {
                uuid += nexttoken(uuid.length);
            }
            return uuid;
        };

        return generate();
    }
}