centralized fn Lib.beginCap to work with new d3 methods

Author: archmoj

src/components/rangeselector/get_update_object.js

@@ -1,6 +1,7 @@
 'use strict';
 
 var d3Time = require('d3-time');
+var beginCap = require('../../lib').beginCap;
 
 module.exports = function getUpdateObject(axisLayout, buttonLayout) {
     var axName = axisLayout._name;
@@ -23,10 +24,7 @@ function getXRange(axisLayout, buttonLayout) {
     var base = new Date(axisLayout.r2l(currentRange[1]));
     var step = buttonLayout.step;
 
-    var utcStep = d3Time['utc' +
-        // Capitalized step e.g. month -> Month
-        (step.charAt(0).toUpperCase() + step.slice(1))
-    ];
+    var utcStep = d3Time['utc' + beginCap(step)];
 
     var count = buttonLayout.count;
     var range0;

src/lib/index.js

@@ -1347,6 +1347,10 @@ lib.bigFont = function(size) {
     return Math.round(1.2 * size);
 };
 
+lib.beginCap = function(str) {
+    return str.charAt(0).toUpperCase() + str.slice(1);
+};
+
 var firefoxVersion = lib.getFirefoxVersion();
 // see https://bugzilla.mozilla.org/show_bug.cgi?id=1684973
 var isProblematicFirefox = firefoxVersion !== null && firefoxVersion < 86;

src/plots/geo/geo.js

@@ -643,7 +643,7 @@ function getProjection(geoLayout) {
 
     var projName = constants.projNames[projType];
     // uppercase the first letter and add geo to the start of method name
-    projName = 'geo' + projName.charAt(0).toUpperCase() + projName.slice(1);
+    projName = 'geo' + Lib.beginCap(projName);
     var projFn = geo[projName] || geoProjection[projName];
     var projection = projFn();