@tanstack/db-ivm/dist/cjs/indexes.d.cts

Incremental View Maintenance for TanStack DB based on Differential Dataflow

import { MultiSet } from './multiset.js';
/**
 * A map from a difference collection trace's keys -> (value, multiplicities) that changed.
 * Used in operations like join and reduce where the operation needs to
 * exploit the key-value structure of the data to run efficiently.
 */
export declare class Index<K, V> {
    #private;
    constructor();
    toString(indent?: boolean): string;
    get(key: K): Array<[V, number]>;
    getMultiplicity(key: K, value: V): number;
    has(key: K): boolean;
    get size(): number;
    addValue(key: K, value: [V, number]): void;
    append(other: Index<K, V>): void;
    join<V2>(other: Index<K, V2>): MultiSet<[K, [V, V2]]>;
}