typescript-nullsafe/dist/esm/Optional/Optional.d.ts

Nullable functions

export declare class Optional<T> {
    private readonly value;
    private constructor();
    filter(filter: (value: T) => boolean): Optional<T>;
    flatMap<S>(mapper: (value: T) => Optional<S>): Optional<S>;
    map<S>(mapper: (value: T) => S): Optional<S>;
    get(): T;
    ifPresent(consumer: (value: T) => void): void;
    isPresent(): boolean;
    isEmpty(): boolean;
    orElse<R extends T | null | undefined>(defaultValue: R): T | R;
    orElseGet<R extends T | null | undefined>(provider: () => R): T | R;
    ifPresentOrElse(consumer: (value: T) => void, orElseConsumer: () => void): void;
    static ofNullable<T>(data: T | undefined | null): Optional<T>;
    static of<T>(data: T extends null | undefined ? never : T): Optional<T>;
    static empty<T>(): Optional<T>;
}