Use stderr for errors in solcjs

Author: axic

solcjs

@@ -47,7 +47,7 @@ var files = argv._;
 var destination = argv['output-dir'] || '.'
 
 function abort (msg) {
-  console.log(msg || 'Error occured');
+  console.error(msg || 'Error occured');
   process.exit(1);
 }
 
@@ -90,7 +90,7 @@ if (!output) {
   abort('No output from compiler');
 } else if (output['errors']) {
   for (var error in output['errors']) {
-    console.log(output['errors'][error]);
+    console.error(output['errors'][error]);
   }
 }
 
@@ -100,7 +100,7 @@ function writeFile (file, content) {
   file = path.join(destination, file);
   fs.writeFile(file, content, function (err) {
     if (err) {
-      console.log('Failed to write ' + file + ': ' + err);
+      console.error('Failed to write ' + file + ': ' + err);
     }
   });
 }

test/cli.js

@@ -6,6 +6,7 @@ tape('CLI', function (t) {
   t.test('--version', function (st) {
     var spt = spawn(st, './solcjs --version');
     spt.stdout.match(RegExp(pkg.version + '(-[^a-zA-A0-9.+]+)?(\\+[^a-zA-Z0-9.-]+)?'));
+    spt.stderr.empty();
     spt.end();
   });
 
@@ -17,7 +18,7 @@ tape('CLI', function (t) {
 
   t.test('no mode specified', function (st) {
     var spt = spawn(st, './solcjs test/DAO/Token.sol');
-    spt.stdout.match(/^Invalid option selected/);
+    spt.stderr.match(/^Invalid option selected/);
     spt.end();
   });
 
@@ -30,7 +31,7 @@ tape('CLI', function (t) {
 
   t.test('invalid file specified', function (st) {
     var spt = spawn(st, './solcjs --bin test/fileNotFound.sol');
-    spt.stdout.match(/^Error reading /);
+    spt.stderr.match(/^Error reading /);
     spt.end();
   });