export type Table<T> = Map<number, Map<number, T>>;
export declare function get<T>(rowIndex: number, colIndex: number, table: Table<T>): T | undefined;
export declare function remove<T>(rowIndex: number, colIndex: number, table: Table<T>): boolean | undefined;
export declare function set<T>(rowIndex: number, colIndex: number, newValue: T, table: Table<T>, combine?: (oldValue: T, newValue: T) => T): void;
export declare function map<A, B>(table: Table<A>, fn: (_: A) => B): Table<B>;
export declare function entries<A>(table: Table<A>): Generator<[number, number, A]>;
export declare function fromEntries<A>(items: Iterable<[number, number, A]>): Table<A>;
export declare function size<A>(table: Table<A>): number;