@reactivex/ix-es5-esm/iterable/minby.js

The Interactive Extensions for JavaScript

import { extremaBy } from './_extremaby.js';
import { equalityComparer } from '../util/comparer.js';
/**
 * Returns the elements in an terable sequence with the minimum key value.
 *
 * @template TSource The type of the elements in the source sequence.
 * @template TKey The type of the key computed for each element in the source sequence.
 * @param {Iterable<TSource>} source An async-iterable sequence to get the minimum elements for.
 * @param {ExtremaOptions<TSource, TKey>} [options] The options which include an optional comparer.
 * @returns {TSource[]} A list of zero or more elements that have a minimum key value.
 */
export function minBy(source, options) {
    var _a = options || {}, _b = _a["comparer"], comparer = _b === void 0 ? equalityComparer : _b, selector = _a["selector"];
    var newComparer = function (key, minValue) { return -comparer(key, minValue); };
    return extremaBy(source, selector, newComparer);
}

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