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55 lines
2.5 KiB
55 lines
2.5 KiB
"use strict";
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function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
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function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
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function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
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/**
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* Copyright (c) 2013-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*
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*/
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var compareNumber = function compareNumber(a, b) {
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return a - b;
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};
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/**
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* Returns the minimum element as measured by a scoring function f. Returns the
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* first such element if there are ties.
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*/
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function minBy(as, f, compare) {
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compare = compare || compareNumber;
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var minA = undefined;
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var minB = undefined;
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var seenFirst = false;
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var _iterator = _createForOfIteratorHelper(as),
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_step;
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try {
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for (_iterator.s(); !(_step = _iterator.n()).done;) {
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var a = _step.value;
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var b = f(a);
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if (!seenFirst || compare(b, minB) < 0) {
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minA = a;
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minB = b;
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seenFirst = true;
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}
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}
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} catch (err) {
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_iterator.e(err);
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} finally {
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_iterator.f();
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}
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return minA;
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}
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module.exports = minBy; |