Add plugins to not transpile spread operator

Author: nchevobbe

packages/devtools-reps/.babelrc

@@ -1,6 +1,7 @@
 {
-  "presets": ["react", "flow"],
+  "presets": ["react"],
   "plugins": [
+    "syntax-object-rest-spread",
     "transform-es2015-modules-commonjs",
     "transform-flow-strip-types"
   ]

packages/devtools-reps/package.json

@@ -37,7 +37,9 @@
     "svg-inline-react": "^3.0.0"
   },
   "devDependencies": {
+    "@sucrase/webpack-object-rest-spread-plugin": "^1.0.0",
     "babel-jest": "^22.4.1",
+    "babel-plugin-syntax-object-rest-spread": "^6.13.0",
     "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
     "babel-preset-react": "^6.24.1",
     "devtools-config": "^0.0.15",

packages/devtools-reps/postcss.config.js

@@ -5,6 +5,7 @@
 const { toolboxConfig } = require("devtools-launchpad/index");
 const getConfig = require("./bin/getConfig");
 const {isDevelopment, isFirefoxPanel} = require("devtools-config");
+const ObjectRestSpreadPlugin = require("@sucrase/webpack-object-rest-spread-plugin");
 
 const path = require("path");
 const projectPath = path.join(__dirname, "src");
@@ -40,8 +41,11 @@ webpackConfig.resolve = {
   }
 };
 
-const extra = {};
-webpackConfig.plugins = [];
+const extra = {
+  disablePostCSS: true
+};
+
+webpackConfig.plugins = [new ObjectRestSpreadPlugin()];
 if (!isDevelopment()) {
   webpackConfig.output.libraryTarget = "umd";