@thi.ng/associative/indexed.d.ts

ES Map/Set-compatible implementations with customizable equality semantics & supporting operations

import { EquivMap } from "./equiv-map.js";
/**
 * Takes an iterable of plain objects and array of indexing keys. Calls
 * {@link selectKeysObj} on each value and uses returned objects as new keys
 * to group original values. Returns a new {@link EquivMap} of sets.
 *
 * @example
 * ```ts tangle:../export/indexed.ts
 * import { indexed } from "@thi.ng/associative";
 *
 * console.log(
 *   "%s",
 *   indexed(
 *     new Set([{a: 1, b: 1}, {a: 1, b: 2}, {a: 1, b: 1, c: 2}]),
 *     ["a","b"]
 *   )
 * );
 * // EquivMap(2) {
 * //   { a: 1, b: 1 } => Set { { a: 1, b: 1 }, { a: 1, b: 1, c: 2 } },
 * //   { a: 1, b: 2 } => Set { { a: 1, b: 2 } }
 * // }
 * ```
 *
 * @param records - objects to index
 * @param ks - keys used for indexing
 */
export declare const indexed: <T extends object>(records: Iterable<T>, ks: (keyof T)[]) => EquivMap<{ [id in keyof T]?: T[id] | undefined; }, Set<T>>;
//# sourceMappingURL=indexed.d.ts.map