rc-js-util/bin/cjs/map/impl/map-intersect.js

A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.mapIntersect = void 0;
/**
 * @public
 * Does not check value equality, only key. Takes items from A.
 *
 * See {@link mapIntersect}.
 */
function mapIntersect(a, b) {
    const result = new Map();
    a.forEach((item, key) => {
        if (b.has(key)) {
            result.set(key, item);
        }
    });
    return result;
}
exports.mapIntersect = mapIntersect;
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