Remove bubleify

Author: dy

package.json

@@ -56,7 +56,6 @@
     "3d-view": "^2.0.0",
     "@plotly/d3-sankey": "^0.5.0",
     "alpha-shape": "^1.0.0",
-    "bubleify": "^1.0.0",
     "color-rgba": "^1.1.1",
     "convex-hull": "^1.0.3",
     "country-regex": "^1.1.0",

tasks/util/browserify_wrapper.js

@@ -2,7 +2,6 @@ var fs = require('fs');
 var path = require('path');
 
 var browserify = require('browserify');
-var bubleify = require('bubleify');
 var minify = require('minify-stream');
 
 var constants = require('./constants');
@@ -47,8 +46,6 @@ module.exports = function _bundle(pathToIndex, pathToBundle, opts) {
 
     var b = browserify(pathToIndex, browserifyOpts);
 
-    b.transform(bubleify, constants.bubleifyOptions);
-
     var bundleStream = b.bundle(function(err) {
         if(err) throw err;
     });

tasks/util/constants.js

@@ -95,20 +95,6 @@ module.exports = {
         sourceMap: false
     },
 
-    bubleifyOptions: {
-        target: {
-            chrome: 48,
-            firefox: 44,
-            edge: 12
-        },
-        transforms: {
-            arrow: true,
-            defaultParameter: false,
-            dangerousForOf: true,
-        },
-        sourceMap: false
-    },
-
     licenseDist: [
         '/**',
         '* plotly.js v' + pkg.version,