format/existence check

src/compiler/diagnosticMessages.json

@@ -1623,7 +1623,7 @@
     },
     "Cannot assign an abstract constructor type to a non-abstract constructor type.": {
         "category": "Error",
-        "code":2517
+        "code": 2517
     },
     "Only an ambient class can be merged with an interface.": {
         "category": "Error",
@@ -1700,11 +1700,11 @@
     "Merged declaration '{0}' cannot include a default export declaration. Consider adding a separate 'export default {0}' declaration instead.": {
         "category": "Error",
         "code": 2652
-    },
+    },
     "Non-abstract class expression does not implement inherited abstract member '{0}' from class '{1}'.": {
         "category": "Error",
         "code": 2653
-    },
+    },
     "Exported external package typings file cannot contain tripleslash references. Please contact the package author to update the package definition.": {
         "category": "Error",
         "code": 2654
@@ -1712,11 +1712,11 @@
     "Exported external package typings can only be in '.d.ts' files. Please contact the package author to update the package definition.": {
         "category": "Error",
         "code": 2655
-    },
+    },
     "Exported external package typings file '{0}' is not a module. Please contact the package author to update the package definition.": {
         "category": "Error",
         "code": 2656
-    },
+    },
     "Import declaration '{0}' is using private name '{1}'.": {
         "category": "Error",
         "code": 4000
@@ -2057,6 +2057,14 @@
         "category": "Error",
         "code": 5053
     },
+    "The project file name is not in 'tsconfig-*.json' format: '{0}'": {
+        "category": "Error",
+        "code": 5055
+    },
+    "Cannot find any project file in specified path: '{0}'": {
+        "category": "Error",
+        "code": 5056
+    },
 
     "Concatenate and emit output to single file.": {
         "category": "Message",

src/compiler/tsc.ts

@@ -190,8 +190,16 @@ namespace ts {
                 configFileName = combinePaths(fileOrDirectory, "tsconfig.json");
             }
             else {
+                if (!/^tsconfig.*\.json$/.test(getBaseFileName(fileOrDirectory))) {
+                    reportDiagnostic(createCompilerDiagnostic(Diagnostics.The_project_file_name_is_not_in_tsconfig_Asterisk_json_format_Colon_0, commandLine.options.project));
+                    return sys.exit(ExitStatus.DiagnosticsPresent_OutputsSkipped);
+                }
                 configFileName = fileOrDirectory;
             }
+            if (!sys.fileExists(configFileName)) {
+                reportDiagnostic(createCompilerDiagnostic(Diagnostics.Cannot_find_any_project_file_in_specified_path_Colon_0, commandLine.options.project));
+                return sys.exit(ExitStatus.DiagnosticsPresent_OutputsSkipped);
+            }
         }
         else if (commandLine.fileNames.length === 0 && isJSONSupported()) {
             let searchPath = normalizePath(sys.getCurrentDirectory());