chore: update to babel 7

karma.conf.js

@@ -13,7 +13,7 @@ module.exports = function(config) {
     },
     browserify: {
       debug: true,
-      transform: [['babelify', { presets: ['env'], plugins: ['istanbul'] }]]
+      transform: [['babelify', { presets: ['@babel/preset-env'], plugins: ['istanbul'] }]]
     },
     reporters: ['spec', 'coverage-istanbul'],
     coverageIstanbulReporter: {

package.json

@@ -54,17 +54,16 @@
     "d3": "^5.0.0"
   },
   "devDependencies": {
-    "babel-core": "^6.26.0",
-    "babel-plugin-external-helpers": "^6.22.0",
-    "babel-plugin-istanbul": "^4.1.6",
-    "babel-preset-env": "^1.7.0",
+    "@babel/core": "^7.0.0",
+    "@babel/preset-env": "^7.0.0",
+    "babel-plugin-istanbul": "^5.0.1",
     "babelify": "^10.0.0",
     "browserify": "^16.1.1",
     "clean-css-cli": "^4.1.11",
     "codecov": "^3.0.4",
     "gh-pages": "^1.2.0",
     "jasmine-core": "^2.3.4",
-    "jshint": "^2.9.6",
+    "jshint": "2.9.6",
     "jshint-stylish": "^2.1.0",
     "karma": "^3.0.0",
     "karma-browserify": "^5.3.0",
@@ -76,7 +75,7 @@
     "nodemon": "^1.18.3",
     "npm-run-all": "^4.1.3",
     "rollup": "^0.65.0",
-    "rollup-plugin-babel": "^3.0.3",
+    "rollup-plugin-babel": "^4.0.3",
     "sass": "^1.10.3",
     "status-back": "^1.1.0",
     "uglify-js": "^3.3.17",

rollup.config.js

@@ -13,12 +13,9 @@ export default {
         }
     },
     plugins: [babel({
-        presets: [['env', {
+        presets: [['@babel/preset-env', {
             modules: false
-        }]],
-        plugins: [
-            'external-helpers'
-        ]
+        }]]
     })],
     external: ['d3'],
 };