Add dependencies required for running build script

They were getting pulled from VS Code which doesn't work if you are
running a build in a clean repo.

Author: code-asher

package.json

@@ -6,7 +6,7 @@
     "postinstall": "rm -rf node_modules/@types/node",
     "start": "yarn runner ensure-in-vscode && nodemon --watch ../../../out --verbose ../../../out/vs/server/main.js",
     "watch": "yarn runner ensure-in-vscode && cd ../../../ && yarn watch",
-    "build": "yarn runner build",
+    "build": "yarn --ignore-scripts && yarn runner build",
     "package": "yarn runner package",
     "binary": "yarn runner binary",
     "patch:generate": "yarn runner ensure-in-vscode && cd ../../../ && git diff --staged > ./src/vs/server/scripts/vscode.patch",
@@ -15,13 +15,15 @@
   "devDependencies": {
     "@coder/nbin": "^1.2.2",
     "@types/fs-extra": "^8.0.1",
+    "@types/node": "^10.12.12",
     "@types/pem": "^1.9.5",
     "@types/safe-compare": "^1.1.0",
     "@types/tar-fs": "^1.16.1",
     "@types/tar-stream": "^1.6.1",
     "fs-extra": "^8.1.0",
     "nodemon": "^1.19.1",
-    "ts-node": "^8.4.1"
+    "ts-node": "^8.4.1",
+    "typescript": "3.6"
   },
   "resolutions": {
     "@types/node": "^10.12.12",

yarn.lock

@@ -2040,6 +2040,11 @@ ts-node@^8.4.1:
     source-map-support "^0.5.6"
     yn "^3.0.0"
 
+typescript@3.6:
+  version "3.6.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.4.tgz#b18752bb3792bc1a0281335f7f6ebf1bbfc5b91d"
+  integrity sha512-unoCll1+l+YK4i4F8f22TaNVPRHcD9PA3yCuZ8g5e0qGqlVlJ/8FSateOLLSagn+Yg5+ZwuPkL8LFUc0Jcvksg==
+
 undefsafe@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.2.tgz#225f6b9e0337663e0d8e7cfd686fc2836ccace76"