fix(build): Switching from babel to buble plugin

.babelrc

@@ -1,3 +1,3 @@
 {
-    "presets": [["modern-browsers", {"modules": false}]]
+    "presets": ["modern-browsers"]
 }

package.json

@@ -43,6 +43,7 @@
     "babel-cli": "^6.26.0",
     "babel-core": "^6.26.0",
     "babel-jest": "^22.0.4",
+    "babel-plugin-external-helpers": "^6.22.0",
     "babel-preset-env": "^1.6.1",
     "babel-preset-es2015": "^6.24.1",
     "babel-preset-modern-browsers": "^10.0.1",
@@ -57,7 +58,7 @@
     "regenerator-runtime": "^0.11.1",
     "rimraf": "^2.6.2",
     "rollup": "^0.54.0",
-    "rollup-plugin-babel": "^3.0.3",
+    "rollup-plugin-buble": "^0.18.0",
     "rollup-plugin-commonjs": "^8.2.6",
     "rollup-plugin-filesize": "^1.5.0",
     "rollup-plugin-node-resolve": "^3.0.2",

rollup.config.js

@@ -1,5 +1,5 @@
 import {minify} from "uglify-es"
-import babel from "rollup-plugin-babel"
+import buble from "rollup-plugin-buble"
 import commonjs from "rollup-plugin-commonjs"
 import filesize from "rollup-plugin-filesize"
 import resolve from "rollup-plugin-node-resolve"
@@ -31,10 +31,7 @@ function getConfig(input, file) {
                 jsnext: true
             }),
             commonjs(),
-            babel({
-                presets: [["es2015", {modules: false}]],
-                exclude: "node_modules/**"
-            }),
+            buble(),
             uglify({}, minify),
             filesize()
         ]

yarn.lock

@@ -32,6 +32,22 @@ acorn-globals@^4.0.0:
   dependencies:
     acorn "^5.0.0"
 
+acorn-jsx@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-3.0.1.tgz#afdf9488fb1ecefc8348f6fb22f464e32a58b36b"
+  dependencies:
+    acorn "^3.0.4"
+
+acorn5-object-spread@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/acorn5-object-spread/-/acorn5-object-spread-4.0.0.tgz#d5758081eed97121ab0be47e31caaef2aa399697"
+  dependencies:
+    acorn "^5.1.2"
+
+acorn@^3.0.4:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-3.3.0.tgz#45e37fb39e8da3f25baee3ff5369e2bb5f22017a"
+
 acorn@^5.0.0, acorn@^5.1.2, acorn@^5.2.1:
   version "5.3.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.3.0.tgz#7446d39459c54fb49a80e6ee6478149b940ec822"
@@ -376,6 +392,12 @@ babel-plugin-check-es2015-constants@^6.22.0:
   dependencies:
     babel-runtime "^6.22.0"
 
+babel-plugin-external-helpers@^6.22.0:
+  version "6.22.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-external-helpers/-/babel-plugin-external-helpers-6.22.0.tgz#2285f48b02bd5dede85175caf8c62e86adccefa1"
+  dependencies:
+    babel-runtime "^6.22.0"
+
 babel-plugin-istanbul@^4.1.5:
   version "4.1.5"
   resolved "https://registry.yarnpkg.com/babel-plugin-istanbul/-/babel-plugin-istanbul-4.1.5.tgz#6760cdd977f411d3e175bb064f2bc327d99b2b6e"
@@ -847,6 +869,19 @@ bser@^2.0.0:
   dependencies:
     node-int64 "^0.4.0"
 
+buble@^0.18.0:
+  version "0.18.0"
+  resolved "https://registry.yarnpkg.com/buble/-/buble-0.18.0.tgz#63b338b8248c474b46fd3e3546560ae08d8abe91"
+  dependencies:
+    acorn "^5.1.2"
+    acorn-jsx "^3.0.1"
+    acorn5-object-spread "^4.0.0"
+    chalk "^2.1.0"
+    magic-string "^0.22.4"
+    minimist "^1.2.0"
+    os-homedir "^1.0.1"
+    vlq "^0.2.2"
+
 builtin-modules@^1.0.0, builtin-modules@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/builtin-modules/-/builtin-modules-1.1.1.tgz#270f076c5a72c02f5b65a47df94c5fe3a278892f"
@@ -888,7 +923,7 @@ chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.0, chalk@^2.0.1:
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.3.0.tgz#b5ea48efc9c1793dccc9b4767c93914d3f2d52ba"
   dependencies:
@@ -1204,10 +1239,6 @@ estraverse@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.2.0.tgz#0dee3fed31fcd469618ce7342099fc1afa0bdb13"
 
-estree-walker@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-0.2.1.tgz#bdafe8095383d8414d5dc2ecf4c9173b6db9412e"
-
 estree-walker@^0.3.0:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-0.3.1.tgz#e6b1a51cf7292524e7237c312e5fe6660c1ce1aa"
@@ -2479,7 +2510,7 @@ optionator@^0.8.1:
     type-check "~0.3.2"
     wordwrap "~1.0.0"
 
-os-homedir@^1.0.0:
+os-homedir@^1.0.0, os-homedir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
@@ -2878,11 +2909,12 @@ rimraf@2, rimraf@^2.5.1, rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.2:
   dependencies:
     glob "^7.0.5"
 
-rollup-plugin-babel@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-babel/-/rollup-plugin-babel-3.0.3.tgz#63adedc863130327512a4a9006efc2241c5b7c15"
+rollup-plugin-buble@^0.18.0:
+  version "0.18.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-buble/-/rollup-plugin-buble-0.18.0.tgz#6e20d1b2840c59eb496b9f954f75243e51786ac1"
   dependencies:
-    rollup-pluginutils "^1.5.0"
+    buble "^0.18.0"
+    rollup-pluginutils "^2.0.1"
 
 rollup-plugin-commonjs@^8.2.6:
   version "8.2.6"
@@ -2918,13 +2950,6 @@ rollup-plugin-uglify@^2.0.1:
   dependencies:
     uglify-js "^3.0.9"
 
-rollup-pluginutils@^1.5.0:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/rollup-pluginutils/-/rollup-pluginutils-1.5.2.tgz#1e156e778f94b7255bfa1b3d0178be8f5c552408"
-  dependencies:
-    estree-walker "^0.2.1"
-    minimatch "^3.0.2"
-
 rollup-pluginutils@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/rollup-pluginutils/-/rollup-pluginutils-2.0.1.tgz#7ec95b3573f6543a46a6461bd9a7c544525d0fc0"
@@ -3319,7 +3344,7 @@ [email protected]:
     core-util-is "1.0.2"
     extsprintf "^1.2.0"
 
-vlq@^0.2.1:
+vlq@^0.2.1, vlq@^0.2.2:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/vlq/-/vlq-0.2.3.tgz#8f3e4328cf63b1540c0d67e1b2778386f8975b26"