/**
 * Check if both arguments are egal.
 */
function is(x, y) {
    // implementation borrowed from harmony:egal spec
    if (x === y) {
        // 0 === -0, but they are not identical
        return x !== 0 || 1 / x === 1 / y;
    }

    // NaN !== NaN, but they are identical.
    // NaNs are the only non-reflexive value, i.e., if x !== x,
    // then x is a NaN.
    // isNaN is broken: it converts its argument to number, so
    // isNaN("foo") => true
    return x !== x && y !== y;
}

export default is;