isNumber
export function isNumber(
input: unknown,
onFalse: NotifyOnFalse
): input is numberArguments
1. input
input: unknown
2. onFalse
onFalse: NotifyOnFalseReturns
input is number
export function isNumber(
input: unknown,
onFalse: NotifyOnFalse
): input is numberinputinput: unknown
onFalseonFalse: NotifyOnFalseinput is number