Variable Option

Type declaration

• isSome: <T>(option: Option<T>) => option is { value: T; toString(): never }

  Check if an Option contains a value.

• None: <T>() => Option<T>

  Create an Option that contains no value.

• unwrap: <T>(option: Option<T>) => T

  Unwrap an Option, throwing an error if it is None.

  Throws

  TypeError if the Option is None.

• unwrapOr: <T>(option: Option<T>, defaultValue?: T) => undefined | T

  Unwrap an Option, returning a default value if it is None.

• unwrapOrThrow: <T>(option: Option<T>, error: Error) => T

  Unwrap an Option, throwing the provided error if it is None.

  Throws

  The provided error if the Option is None.

• Value: <T>(value: T) => Option<T>

  Create an Option that contains a value.