export type MaybeArray<T> = T | T[];
export type Awaitable<T> = T | PromiseLike<T>;
export type ControlledPromise<T> = Promise<T> & {
    readonly settled: boolean;
    resolve(value: Awaitable<T>): void;
    reject(reason?: any): void;
};
export declare type Mutable<T> = {
    -readonly [P in keyof T]: T[P];
};
export type Optional<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>;
export type Location = {
    x: number;
    y: number;
};
export type Size = {
    width: number;
    height: number;
};
export type Region = Location & Size;