--[=[
	Shorthand for `Promise:andThen(nil, failureHandler)`.

	Returns a Promise that resolves if the `failureHandler` worked without encountering an additional error.

	:::warning
	Within the failure handler, you should never assume that the rejection value is a string. Some rejections within the Promise library are represented by [[Error]] objects. If you want to treat it as a string for debugging, you should call `tostring` on it first.
	:::


	@param failureHandler (...: any) -> ...any
	@return Promise<...any>
]=]

function Promise.prototype:catch(failureCallback)
	assert(
		failureCallback == nil or type(failureCallback) == "function",
		string.format(ERROR_NON_FUNCTION, "Promise:catch")
	)
	return self:_andThen(debug.traceback(nil, 2), nil, failureCallback)
end
