Add option to override/remove type label in error message

[taylorjdawson]

Currently when a predicate is failed by returning a message the type is pre-pended to the message like so:

const greaterThan = (max: number, x: number) => {
    return x > max || `Expected \`${x}\` to be greater than \`${max}\``;
};

ow(5, ow.number.is(x => greaterThan(10, x)));
// => ArgumentError: (number) Expected `5` to be greater than `10`

and if a custom label is added:

ow(5, 'custom label', ow.number.is(x => greaterThan(10, x)));
// => ArgumentError: (number `custom label`) Expected `5` to be greater than `10`

I would love the option to override/remove as I want to send this error message back to the client and having the type there would be context leak e.g. the client has no need to know backend type implementations.

[sindresorhus]

Any suggestions on how to best resolve this?

[taylorjdawson]

What about the option to call ow without a type?

ow(5, ow.is(x => greaterThan(10, x)));
// => ArgumentError: Expected `5` to be greater than `10`

ow(5, 'custom label', ow.is(x => greaterThan(10, x)));
// => ArgumentError: (custom label) Expected `5` to be greater than `10`