forked from qwerty/tupali
55 lines
1.8 KiB
JavaScript
55 lines
1.8 KiB
JavaScript
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/**
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*
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* (c) 2010-2020 Pawel Fus & Daniel Studencki
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*
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* License: www.highcharts.com/license
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*
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* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
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*
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* */
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'use strict';
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import '../parts/Utilities.js';
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var reduceArrayMixin = {
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/**
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* Get min value of array filled by OHLC data.
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* @private
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* @param {Array<*>} arr Array of OHLC points (arrays).
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* @param {string} index Index of "low" value in point array.
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* @return {number} Returns min value.
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*/
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minInArray: function (arr, index) {
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return arr.reduce(function (min, target) {
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return Math.min(min, target[index]);
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}, Number.MAX_VALUE);
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},
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/**
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* Get max value of array filled by OHLC data.
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* @private
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* @param {Array<*>} arr Array of OHLC points (arrays).
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* @param {string} index Index of "high" value in point array.
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* @return {number} Returns max value.
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*/
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maxInArray: function (arr, index) {
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return arr.reduce(function (max, target) {
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return Math.max(max, target[index]);
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}, -Number.MAX_VALUE);
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},
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/**
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* Get extremes of array filled by OHLC data.
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* @private
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* @param {Array<*>} arr Array of OHLC points (arrays).
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* @param {string} minIndex Index of "low" value in point array.
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* @param {string} maxIndex Index of "high" value in point array.
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* @return {Array<number,number>} Returns array with min and max value.
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*/
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getArrayExtremes: function (arr, minIndex, maxIndex) {
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return arr.reduce(function (prev, target) {
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return [
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Math.min(prev[0], target[minIndex]),
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Math.max(prev[1], target[maxIndex])
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];
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}, [Number.MAX_VALUE, -Number.MAX_VALUE]);
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}
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};
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export default reduceArrayMixin;
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