function assert(a, message) {
    if (!a)
        throw new Error(message);
}

function assertThrowTypeError(a, b, message) {
    try {
        let n = a % b;
        assert(false, message + ": Should throw TypeError, but executed without exception");
    } catch (e) {
        assert(e instanceof TypeError, message + ": expected TypeError, got: " + e);
    }
}

assertThrowTypeError(30n, "foo", "BigInt % String");
assertThrowTypeError("bar", 18757382984821n, "String % BigInt");
assertThrowTypeError(30n, Symbol("foo"), "BigInt % Symbol");
assertThrowTypeError(Symbol("bar"), 18757382984821n, "Symbol % BigInt");
assertThrowTypeError(30n, 3320, "BigInt % Int32");
assertThrowTypeError(33256, 18757382984821n, "Int32 % BigInt");
assertThrowTypeError(30n, 0.543, "BigInt % Double");
assertThrowTypeError(230.19293, 18757382984821n, "Double % BigInt");
assertThrowTypeError(30n, NaN, "BigInt % NaN");
assertThrowTypeError(NaN, 18757382984821n, "NaN % BigInt");
assertThrowTypeError(30n, NaN, "BigInt % NaN");
assertThrowTypeError(NaN, 18757382984821n, "NaN % BigInt");
assertThrowTypeError(30n, +Infinity, "BigInt % NaN");
assertThrowTypeError(+Infinity, 18757382984821n, "NaN % BigInt");
assertThrowTypeError(30n, -Infinity, "BigInt % -Infinity");
assertThrowTypeError(-Infinity, 18757382984821n, "-Infinity % BigInt");
assertThrowTypeError(30n, null, "BigInt % null");
assertThrowTypeError(null, 18757382984821n, "null % BigInt");
assertThrowTypeError(30n, undefined, "BigInt % undefined");
assertThrowTypeError(undefined, 18757382984821n, "undefined % BigInt");
assertThrowTypeError(30n, true, "BigInt * true");
assertThrowTypeError(true, 18757382984821n, "true % BigInt");
assertThrowTypeError(30n, false, "BigInt % false");
assertThrowTypeError(false, 18757382984821n, "false % BigInt");

// Error when returning from object

let o = {
    valueOf: function () { return Symbol("Foo"); }
};

assertThrowTypeError(30n, o, "BigInt % Object.valueOf returning Symbol");
assertThrowTypeError(o, 18757382984821n, "Object.valueOf returning Symbol % BigInt");

o = {
    valueOf: function () { return 33256; }
};

assertThrowTypeError(30n, o, "BigInt % Object.valueOf returning Int32");
assertThrowTypeError(o, 18757382984821n, "Object.valueOf returning Int32 % BigInt");

o = {
    valueOf: function () { return 0.453; }
};

assertThrowTypeError(30n, o, "BigInt % Object.valueOf returning Double");
assertThrowTypeError(o, 18757382984821n, "Object.valueOf returning Double % BigInt");

o = {
    toString: function () { return Symbol("Foo"); }
};

assertThrowTypeError(30n, o, "BigInt % Object.toString returning Symbol");
assertThrowTypeError(o, 18757382984821n, "Object.toString returning Symbol % BigInt");

o = {
    toString: function () { return 33256; }
};

assertThrowTypeError(30n, o, "BigInt % Object.toString returning Int32");
assertThrowTypeError(o, 18757382984821n, "Object.toString returning Int32 % BigInt");

o = {
    toString: function () { return 0.453; }
};

assertThrowTypeError(30n, o, "BigInt % Object.toString returning Double");
assertThrowTypeError(o, 18757382984821n, "Object.toString returning Double % BigInt");

o = {
    [Symbol.toPrimitive]: function () { return Symbol("Foo"); }
};

assertThrowTypeError(30n, o, "BigInt % Object.@@toPrimitive returning Symbol");
assertThrowTypeError(o, 18757382984821n, "Object.@@toPrimitive returning Symbol % BigInt");

o = {
    [Symbol.toPrimitive]: function () { return 33256; }
};

assertThrowTypeError(30n, o, "BigInt % Object.@@toPrimitive returning Int32");
assertThrowTypeError(o, 18757382984821n, "Object.@@toPrimitive returning Int32 % BigInt");

o = {
    [Symbol.toPrimitive]: function () { return 0.453; }
};

assertThrowTypeError(30n, o, "BigInt % Object.@@toPrimitive returning Double");
assertThrowTypeError(o, 18757382984821n, "Object.@@toPrimitive returning Double % BigInt");

o = {
    [Symbol.toPrimitive]: function () { throw new Error("Bad"); }
};

assertThrowTypeError(Symbol("30"), o, "Symbol % object should result in TypeError");
try {
    o % Symbol("30");
} catch (e) {
    assert(e.message === "Bad", "Erro message expected is 'Bad'");
}