sequency/lib/minBy.js

Functional sequences for processing iterable data in JavaScript

Object.defineProperty(exports, "__esModule", { value: true });
exports.MinBy = void 0;
var MinBy = /** @class */ (function () {
    function MinBy() {
    }
    /**
     * Returns the minimum element by comparing the results of the given `selector` function
     * for each element of the sequence or `null` if the sequence is empty.
     *
     * @param {(value: T) => R} selector
     * @returns {T}
     */
    MinBy.prototype.minBy = function (selector) {
        var min = null;
        var minSelected = null;
        for (var item = this.iterator.next(); !item.done; item = this.iterator.next()) {
            var value = selector(item.value);
            if (minSelected == null || value < minSelected) {
                minSelected = value;
                min = item.value;
            }
        }
        return min;
    };
    return MinBy;
}());
exports.MinBy = MinBy;
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