typescript: add overrides for npm modules not used when 'browser' is defined

package-overrides/npm/typescript@1.6.0-beta.json

@@ -1,3 +1,12 @@
 {
-  "browser": {}
+  "browser": {},
-}
+  "map": {
+    "buffer": "@empty",
+    "child_process": "@empty",
+    "fs": "@empty",
+    "os": "@empty",
+    "path": "@empty",
+    "process": "@empty",
+    "readline": "@empty"
+  }
+}

package-overrides/npm/typescript@1.7.0-dev.json

@@ -0,0 +1,12 @@
+{
+  "browser": {},
+  "map": {
+    "buffer": "@empty",
+    "child_process": "@empty",
+    "fs": "@empty",
+    "os": "@empty",
+    "path": "@empty",
+    "process": "@empty",
+    "readline": "@empty"
+  }
+}