Bump metro@0.40.0

Summary:
@public

This new version of metro replaces the `getProjectRoots()` config param by `getProjectRoot()` (which is used as the main folder for calculating relative paths of files, etc) and `getWatchFolders()` (which is used to know which files/folder to crawl when starting metro).

More info: 3bdf386d14

[skip-ci]

Reviewed By: yungsters, mmmulani

Differential Revision: D8538986

fbshipit-source-id: 2afc33950334a278364debb39f34ef0fe0535894

babel-preset/package.json

@@ -41,6 +41,6 @@
     "@babel/plugin-transform-template-literals": "7.0.0-beta.47",
     "@babel/plugin-transform-unicode-regex": "7.0.0-beta.47",
     "@babel/template": "7.0.0-beta.47",
-    "metro-babel7-plugin-react-transform": "^0.39.1"
+    "metro-babel7-plugin-react-transform": "^0.40.0"
   }
 }

package.json

@@ -167,10 +167,10 @@
     "graceful-fs": "^4.1.3",
     "inquirer": "^3.0.6",
     "lodash": "^4.17.5",
-    "metro": "^0.39.1",
-    "metro-babel-register": "^0.39.1",
-    "metro-core": "^0.39.1",
-    "metro-memory-fs": "^0.39.1",
+    "metro": "^0.40.0",
+    "metro-babel-register": "^0.40.0",
+    "metro-core": "^0.40.0",
+    "metro-memory-fs": "^0.40.0",
     "mime": "^1.3.4",
     "minimist": "^1.2.0",
     "mkdirp": "^0.5.1",