Pick up TS 2.8 insiders

extensions/package.json

@@ -3,7 +3,7 @@
   "version": "0.0.1",
   "description": "Dependencies shared by all extensions",
   "dependencies": {
-    "typescript": "2.7.2"
+    "typescript": "2.8.0-insiders.20180320"
   },
   "scripts": {
     "postinstall": "node ./postinstall"

extensions/yarn.lock

@@ -2,6 +2,6 @@
 # yarn lockfile v1
 
 
-typescript@2.7.2:
-  version "2.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.7.2.tgz#2d615a1ef4aee4f574425cdff7026edf81919836"
+typescript@2.8.0-insiders.20180320:
+  version "2.8.0-insiders.20180320"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.8.0-insiders.20180320.tgz#30fb1dd0230a271a9b174820feafdc9d8da2497d"