Separate all error/information output on stderr for csv output piping

dynamoDBtoCSV.js

@@ -35,8 +35,8 @@ program
   const options = program.opts();
 
 if (!options.table) {
-  console.log("You must specify a table");
-  program.outputHelp();
+  console.error("You must specify a table");
+  program.outputHelp({ error: true });
   process.exit(1);
 }
 
@@ -77,7 +77,7 @@ if (options.mfa && options.profile) {
   // Update config to include MFA
   AWS.config.update({ credentials: creds });
 } else if (options.mfa && !options.profile) {
-  console.log('error: MFA requires a profile(-p [profile]) to work');
+  console.error('error: MFA requires a profile(-p [profile]) to work');
   process.exit(1);
 }
 
@@ -168,9 +168,9 @@ const appendStats = (params, items) => {
 
 const printStats = (stats) => {
   if (stats) {
-    console.log("\nSTATS\n----------");
+    console.error("\nSTATS\n----------");
     Object.keys(stats).forEach((key) => {
-      console.log(key + " = " + stats[key]);
+      console.error(key + " = " + stats[key]);
     });
     writeCount += rowCount;
     rowCount = 0;
@@ -237,8 +237,8 @@ const unparseData = (lastEvaluatedKey) => {
     console.log(endData);
   }
   // Print last evaluated key so process can be continued after stop.
-  console.log("last key:");
-  console.log(lastEvaluatedKey);
+  console.error("last key:");
+  console.error(lastEvaluatedKey);
 
   // reset write array. saves memory
   unMarshalledArray = [];