feat(massInPeaks): expose slot variable

src/massInPeaks.js

@@ -9,20 +9,28 @@ import {integrate2D} from './util/integrate2D';
  * @param {number} [options.thresholdFactor = 0] - Every peak that it's bellow the main peak times this factor fill be removed (when is 0 there's no filter)
  * @param {number} [options.maxNumberPeaks = Number.MAX_VALUE] - Maximum number of peaks for each mass spectra (when is Number.MAX_VALUE there's no filter)
  * @param {number} [options.groupWidth = 0] - When find a max can't be another max in a radius of this size
+ * @param {number} [options.slot = 1] - When to merge two mass values intensities
  * @return {Array<object>} - List of GSD objects with an extra 'ms' field with the integrated MS spectra
  */
 export function massInPeaks(peakList, sampleMS, options = {}) {
+    const {
+        thresholdFactor = 0,
+        maxNumberPeaks = Number.MAX_VALUE,
+        groupWidth = 0,
+        slot = 1
+    } = options;
+
     // integrate MS
     for (let i = 0; i < peakList.length; ++i) {
         var serie = {dimension: 2, data: sampleMS};
-        var integral = integrate2D(serie, peakList[i].left.index, peakList[i].right.index, 1);
+        var integral = integrate2D(serie, peakList[i].left.index, peakList[i].right.index, slot);
         var msSum = {
             x: integral[0],
             y: integral[1]
         };
 
-        if (options.maxNumberPeaks || options.thresholdFactor || options.groupWidth) {
-            msSum = massFilter(msSum, options);
+        if (maxNumberPeaks || thresholdFactor || groupWidth) {
+            msSum = massFilter(msSum, {maxNumberPeaks, thresholdFactor, groupWidth});
         }
         peakList[i].ms = msSum;
     }