export namespace constants {
    let undefined: string;
    let Infinity: string;
    let NaN: string;
    let E: string;
    let LN2: string;
    let LN10: string;
    let LOG2E: string;
    let LOG10E: string;
    let PI: string;
    let SQRT1_2: string;
    let SQRT2: string;
}