@daiso-tech/core/dist/collection/implementations/async-iterable-collection/_shared/async-count-by-iterable.js

The library offers flexible, framework-agnostic solutions for modern web applications, built on adaptable components that integrate seamlessly with popular frameworks like Next Js.

/**
 * @module Collection
 */
import {} from "../../../../collection/contracts/_module-exports.js";
import { resolveInvokable } from "../../../../utilities/_module-exports.js";
/**
 * @internal
 */
export class AsyncCountByIterable {
    collection;
    callback;
    constructor(collection, callback = (item) => item) {
        this.collection = collection;
        this.callback = callback;
    }
    async *[Symbol.asyncIterator]() {
        const map = new Map();
        for await (const [index, item] of this.collection.entries()) {
            const key = await resolveInvokable(this.callback)(item, index, this.collection);
            if (!map.has(key)) {
                map.set(key, 0);
            }
            const counter = map.get(key);
            if (counter !== undefined) {
                map.set(key, counter + 1);
            }
        }
        yield* map;
    }
}
//# sourceMappingURL=async-count-by-iterable.js.map