/**
 * Copyright (c) 2018-2021 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 * @author David Sehnal <david.sehnal@gmail.com>
 */
export type Mutable<T> = {
    -readonly [P in keyof T]: T[P];
};
export type PartialBy<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>;
export type PickRequired<T, K extends keyof T> = T & Required<Pick<T, K>>;
export type TypedIntArray = Int8Array | Int16Array | Int32Array | Uint8Array | Uint16Array | Uint32Array;
export type TypedFloatArray = Float32Array | Float64Array;
export type TypedArray = TypedIntArray | TypedFloatArray;
export type NumberArray = TypedArray | number[];
export type UintArray = Uint8Array | Uint16Array | Uint32Array | number[];
export type ValueOf<T> = T[keyof T];
export type ArrayCtor<T> = {
    new (size: number): {
        [i: number]: T;
        length: number;
    };
};
/** assignable ArrayLike version */
export type AssignableArrayLike<T> = {
    [i: number]: T;
    length: number;
};
export type NonNullableArray<T extends any[] | ReadonlyArray<any>> = T extends any[] ? NonNullable<T[0]>[] : ReadonlyArray<NonNullable<T[0]>>;
export declare function ObjectKeys<T extends object>(o: T): (keyof T)[];
export interface FiniteArray<T, L extends number = number> extends ReadonlyArray<T> {
    length: L;
}
export declare function assertUnreachable(x: never): never;
export declare function isPromiseLike<T = any>(x: any): x is Promise<T>;