Update a bunch of dependencies

.babelrc

@@ -1,12 +1,12 @@
 {
   "sourceMaps": true,
   "presets": [
-    ["es2015", { "loose":true }],
-    "stage-0"
+    "@babel/preset-env"
   ],
   "plugins": [
-    ["transform-decorators-legacy"],
-    ["transform-react-jsx", { "pragma": "h" }],
-    ["transform-object-assign"]
+    ["@babel/plugin-proposal-decorators", { "legacy": true }],
+    ["@babel/plugin-transform-object-assign"],
+    ["@babel/plugin-transform-react-jsx", { "pragma": "h" }],
+    ["@babel/plugin-proposal-class-properties"]
   ]
 }

package.json

@@ -44,19 +44,17 @@
     ]
   },
   "devDependencies": {
+    "@babel/core": "^7.3.4",
+    "@babel/plugin-proposal-class-properties": "^7.3.4",
+    "@babel/plugin-proposal-decorators": "^7.3.0",
+    "@babel/plugin-transform-object-assign": "^7.2.0",
+    "@babel/plugin-transform-react-jsx": "^7.3.0",
+    "@babel/preset-env": "^7.3.4",
+    "@babel/register": "^7.0.0",
+    "@babel/runtime": "^7.3.4",
     "autoprefixer": "^7.0.1",
-    "babel": "^6.5.2",
-    "babel-core": "^6.24.0",
-    "babel-eslint": "^8.2.1",
-    "babel-jest": "^22.2.0",
-    "babel-loader": "^7.0.0",
-    "babel-plugin-transform-decorators-legacy": "^1.3.4",
-    "babel-plugin-transform-object-assign": "^6.22.0",
-    "babel-plugin-transform-react-jsx": "^6.8.0",
-    "babel-preset-es2015": "^6.24.0",
-    "babel-preset-stage-0": "^6.5.0",
-    "babel-register": "^6.24.0",
-    "babel-runtime": "^6.11.6",
+    "babel-eslint": "^10.0.1",
+    "babel-loader": "^8.0.5",
     "chai": "^4.0.2",
     "copy-webpack-plugin": "^4.3.1",
     "cross-env": "^5.0.1",
@@ -68,7 +66,7 @@
     "file-loader": "^1.1.6",
     "html-webpack-plugin": "^2.28.0",
     "identity-obj-proxy": "^3.0.0",
-    "jest": "^22.2.1",
+    "jest": "^24.1.0",
     "json-loader": "^0.5.4",
     "less": "^3.7.1",
     "less-loader": "^4.0.3",
@@ -80,8 +78,8 @@
     "regenerator-runtime": "^0.11.1",
     "replace-bundle-webpack-plugin": "^1.0.0",
     "script-ext-html-webpack-plugin": "^1.3.4",
-    "sinon": "^4.2.2",
-    "sinon-chai": "^2.9.0",
+    "sinon": "^7.2.5",
+    "sinon-chai": "^3.3.0",
     "source-map-loader": "^0.2.1",
     "style-loader": "^0.20.1",
     "url-loader": "^0.6.1",
@@ -93,16 +91,16 @@
     "codemirror": "^5.34.0",
     "core-js": "^2.5.3",
     "js-beautify": "^1.7.5",
-    "lodash": "^4.17.4",
-    "preact": "^8.1.0",
-    "preact-compat": "^3.15.0",
-    "preact-render-to-string": "^3.6.0",
+    "lodash": "^4.17.11",
+    "preact": "^8.4.2",
+    "preact-compat": "^3.18.4",
+    "preact-render-to-string": "^4.1.0",
     "promise-polyfill": "^7.1.0",
     "proptypes": "^1.0.0",
     "query-string": "^5.0.1",
-    "react-codemirror2": "^4.0.0",
+    "react-codemirror2": "^5.1.0",
     "react-router-dom": "^4.2.2",
-    "serve": "^9.2.0",
+    "serve": "^10.1.2",
     "whatwg-fetch": "^2.0.3"
   }
 }