Merge pull request #5886 from andrewdacenko/patch-1

Restrict logging of errors with verbosity level

src/shared/util.js

@@ -208,17 +208,10 @@ function warn(msg) {
 // Fatal errors that should trigger the fallback UI and halt execution by
 // throwing an exception.
 function error(msg) {
-  // If multiple arguments were passed, pass them all to the log function.
-  if (arguments.length > 1) {
-    var logArguments = ['Error:'];
-    logArguments.push.apply(logArguments, arguments);
-    console.log.apply(console, logArguments);
-    // Join the arguments into a single string for the lines below.
-    msg = [].join.call(arguments, ' ');
-  } else {
+  if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.errors) {
     console.log('Error: ' + msg);
-  }
     console.log(backtrace());
+  }
   UnsupportedManager.notify(UNSUPPORTED_FEATURES.unknown);
   throw new Error(msg);
 }