Check for repeating meta-data flag.

Author: Yui T

src/harness/fourslash.ts

@@ -2147,6 +2147,10 @@ module FourSlash {
                             currentFileOptions[match[1]] = match[2];
                         }
                     } else {
+                        // Check if the match is already existed in the global options
+                        if (opts[match[1]] !== undefined) {
+                            throw new Error("Global Option : '" + match[1] + "' is already existed");
+                        }
                         opts[match[1]] = match[2];
                     }
                 }

tests/cases/fourslash/getEmitOutputSourceMap2.ts

@@ -17,9 +17,4 @@
 ////    var k = 10;
 //// }
 
-var filename = "sample/outDir/sourceMapResult";
-var jsFilename = filename + ".js"; 
-var sourceMapFilename = filename + ".js.map"; 
-var outputFilenames = jsFilename + " " + sourceMapFilename;
-verify.baselineGetEmitOutput();
-//verify.emitOutput(EmitReturnStatus.Succeeded, outputFilenames);
+verify.baselineGetEmitOutput();