Adding optionalDependencies and peerDependencies to the list typings to merge in if present.

Author: jramsay

src/services/jsTyping.ts

@@ -173,6 +173,12 @@ namespace ts.JsTyping {
  if (hasProperty(jsonDict, "devDependencies")) {
  mergeTypings(getKeys(jsonDict.devDependencies));
  }
+ if (hasProperty(jsonDict, "optionalDependencies")) {
+ mergeTypings(getKeys(jsonDict.optionalDependencies));
+ }
+ if (hasProperty(jsonDict, "peerDependencies")) {
+ mergeTypings(getKeys(jsonDict.peerDependencies));
+ }
  }
  }