[tool] upgrade vscode-jsonrpc dep

Summary: All that changed is that tsc compiles to ES6, but it still supports node >= 4.

Reviewed By: gabelevi

Differential Revision: D17425021

fbshipit-source-id: 386d3770f9b46865aef3b3f55dd6e96fdc9f8707

Author: mroch

packages/flow-dev-tools/package.json

@@ -29,7 +29,7 @@
     "semver": "^5.6.0",
     "source-map-support": "~0.4.0",
     "twit": "^2.1.5",
-    "vscode-jsonrpc": "^3.3.0"
+    "vscode-jsonrpc": "^4.0.0"
   },
   "babel": {
     "presets": [

yarn.lock

@@ -2879,9 +2879,10 @@ vlq@^0.2.1:
   resolved "https://registry.yarnpkg.com/vlq/-/vlq-0.2.3.tgz#8f3e4328cf63b1540c0d67e1b2778386f8975b26"
   integrity sha512-DRibZL6DsNhIgYQ+wNdWDL2SL3bKPlVrRiBqV5yuMm++op8W4kGFtaQfCs4KEJn0wBZcHVHJ3eoywX8983k1ow==
 
-vscode-jsonrpc@^3.3.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/vscode-jsonrpc/-/vscode-jsonrpc-3.5.0.tgz#87239d9e166b2d7352245b8a813597804c1d63aa"
+vscode-jsonrpc@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/vscode-jsonrpc/-/vscode-jsonrpc-4.0.0.tgz#a7bf74ef3254d0a0c272fab15c82128e378b3be9"
+  integrity sha512-perEnXQdQOJMTDFNv+UF3h1Y0z4iSiaN9jIlb0OqIYgosPCZGYh/MCUlkFtV2668PL69lRDO32hmvL2yiidUYg==
 
 walker@~1.0.5:
   version "1.0.7"