export type OrNil<T> = T | undefined | null;
export type OrNone<T> = T | undefined | null | false | '';
export type PromiseData<T> = T extends Promise<infer R> ? R : T;
export type FunctionParam<T> = T extends (arg: infer R) => any ? R : any;
export type FunctionResult<T> = T extends (...args: any[]) => infer R ? R : any;