Mask arguments cannot be currently inferred from default or parser options

[teijo]

Logically the arguments for the masking function are as documented in README:

mask?: boolean | ((value: Parser | string | Default) => string);

Currently the value will get inferred (not explicitly passing it as type argument) as any. It might be limitation of TypeScript (3.7.4 at the time of writing) to not be able to infer type from a sibling property (default: Default or parser: () => Parser).

Fix if / when possible.