timeseries.js refactor

dist/datasource-zabbix/timeseries.js

@@ -12,6 +12,10 @@ System.register(['lodash', './utils'], function (_export, _context) {
    * timeseries.js
    *
    * This module contains functions for working with time series.
+   *
+   * datapoints - array of points where point is [value, timestamp]. In almost all cases (if other wasn't
+   * explicitly said) we assume datapoints are sorted by timestamp.
+   *
    */
 
   function downsample(datapoints, time_to, ms_interval, func) {
@@ -64,7 +68,7 @@ System.register(['lodash', './utils'], function (_export, _context) {
    * Group points by given time interval
    * datapoints: [[<value>, <unixtime>], ...]
    */
-  function groupBy(interval, groupByCallback, datapoints) {
+  function groupBy(datapoints, interval, groupByCallback) {
     var ms_interval = utils.parseInterval(interval);
 
     // Calculate frame timestamps
@@ -90,7 +94,7 @@ System.register(['lodash', './utils'], function (_export, _context) {
 
   /**
    * Summarize set of time series into one.
-   * @param {object[]} timeseries
+   * @param {datapoints[]} timeseries array of time series
    */
   function sumSeries(timeseries) {
 
@@ -124,7 +128,7 @@ System.register(['lodash', './utils'], function (_export, _context) {
     }
 
     return sortByTime(new_timeseries);
-  }function scale(factor, datapoints) {
+  }function scale(datapoints, factor) {
     return _.map(datapoints, function (point) {
       return [point[0] * factor, point[1]];
     });