function assert (condition, errorMessage) {
if (condition == false || condition == null) {
throw errorMessage;
}
}
function typecheck (argTypes, args) {
var i;
for (i in argTypes) {
var expected = argTypes[i];
var argument = args[i];
var arg_type = typeof argument;
var arg_n = parseInt(i)+1;
console.log(arg_n)
if (expected != "any") {
if (typeof expected == "object") {
var n_type;
var passed = false;
for (n_type in expected) {
passed = arg_type == expected[n_type]? true : passed;
}
assert(
passed,
"Invalid argument #" + arg_n + ": expected "+ expected.join(" or ") +", got " + arg_type
);
} else {
assert(
(arg_type == expected),
"Invalid argument #" + arg_n + ": expected "+ expected +", got " + arg_type
);
}
}
}
}
typecheck (
["number", "any", ["string", "number"]],
[1, null, {}]
)
