Variable matchMaybeConst

Type Declaration

• • <T, U>(maybe: Maybe<T>, onSome: (value: T) => U, onNone: () => U): U

  • Terminal collapse — fold both branches into a single value. Positional, dual-form. Same shape as Result.match for sibling consistency.

    For files that also import match from ts-pattern, the alias matchMaybe is identical.

    Type Parameters

    • T
    • U

    Parameters

    • maybe: Maybe<T>
    • onSome: (value: T) => U
    • onNone: () => U

    Returns U

    Example

    const greeting = match(
      fromNullable(user),
      (u) => `hello ${u.name}`,
      () => "hello guest",
    );
    Copy

  • <T, U>(onSome: (value: T) => U, onNone: () => U): (maybe: Maybe<T>) => U

  • Terminal collapse — fold both branches into a single value. Positional, dual-form. Same shape as Result.match for sibling consistency.

    For files that also import match from ts-pattern, the alias matchMaybe is identical.

    Type Parameters

    • T
    • U

    Parameters

    • onSome: (value: T) => U
    • onNone: () => U

    Returns (maybe: Maybe<T>) => U

    Example

    const greeting = match(
      fromNullable(user),
      (u) => `hello ${u.name}`,
      () => "hello guest",
    );
    Copy