Removing things that cause buffer deprecation warnings (#121)

* removing things that cause buffer deprecation warnings

* back to beta3

* Reducing typescript node version to minimum we support

package.json

@@ -13,7 +13,7 @@
   },
   "devDependencies": {
     "@types/mocha": "^2.2.48",
-    "@types/node": "^6.0.112",
+    "@types/node": "^8.0.0",
     "@types/sinon": "^2.3.7",
     "chai": "^4.1.1",
     "mocha": "^5.2.0",

src/Converters.ts

@@ -48,7 +48,7 @@ export function fromTypedData(typedData?: rpc.ITypedData, convertStringToJson: b
     }
     return str;
   } else if (typedData.bytes) {
-    return new Buffer(typedData.bytes);
+    return Buffer.from(<Buffer>typedData.bytes);
   }
 }
 

src/utils/Logger.ts

@@ -1,9 +1,9 @@
 const logPrefix = "LanguageWorkerConsoleLog";
 
 export function systemLog(message?: any, ...optionalParams: any[]) { 
-    console.log(logPrefix + message, optionalParams); 
+    console.log(logPrefix + message, ...optionalParams); 
 };
 
 export function systemError(message?: any, ...optionalParams: any[]) { 
-    console.error(logPrefix + message, optionalParams); 
+    console.error(logPrefix + message, ...optionalParams); 
 };