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@cryptobadassteam/runelib

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interface IOption<T> { isSome: () => boolean; value: () => T; } declare class None implements IOption<null> { constructor(); isSome(): boolean; map(f: (a: never) => unknown): None; value(): null; } declare class Some<T> implements IOption<T> { private readonly _value; constructor(value: T); isSome(): boolean; map<S>(f: (a: T) => S): Some<S>; value(): T; } export declare function some<T>(t: T): Some<T>; export declare function none(): None; export type Option<T> = None | Some<T>; export {};