Verify and fix scenario when .js and .ts files with same name are present and tsconfig doesnt specify any filenames

src/compiler/commandLineParser.ts

@@ -474,7 +474,7 @@ namespace ts {
             }
             else {
                 let exclude = json["exclude"] instanceof Array ? map(<string[]>json["exclude"], normalizeSlashes) : undefined;
-                let sysFiles = host.readDirectory(basePath, ".ts", exclude).concat(host.readDirectory(basePath, ".tsx", exclude));
+                let sysFiles = host.readDirectory(basePath, ".ts", exclude).concat(host.readDirectory(basePath, ".tsx", exclude)).concat(host.readDirectory(basePath, ".js", exclude));
                 for (let i = 0; i < sysFiles.length; i++) {
                     let name = sysFiles[i];
                     if (fileExtensionIs(name, ".js")) {

src/harness/projectsRunner.ts

@@ -263,7 +263,13 @@ class ProjectRunner extends RunnerBase {
             }
 
             function readDirectory(rootDir: string, extension: string, exclude: string[]): string[] {
-                return Harness.IO.readDirectory(getFileNameInTheProjectTest(rootDir), extension, exclude);
+                let harnessReadDirectoryResult = Harness.IO.readDirectory(getFileNameInTheProjectTest(rootDir), extension, exclude);
+                let result: string[] = [];
+                for (let i = 0; i < harnessReadDirectoryResult.length; i++) {
+                    result[i] = ts.getRelativePathToDirectoryOrUrl(testCase.projectRoot, harnessReadDirectoryResult[i],
+                        getCurrentDirectory(), Harness.Compiler.getCanonicalFileName, /*isAbsolutePathAnUrl*/ false);
+                }
+                return result;
             }
 
             function fileExists(fileName: string): boolean {

tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/amd/SameNameFilesNotSpecified/a.d.ts

@@ -0,0 +1 @@
+declare var test: number;

tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/amd/SameNameFilesNotSpecified/a.js

@@ -0,0 +1 @@
+var test = 10;

tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/amd/jsFileCompilationSameNameFilesNotSpecified.json

@@ -0,0 +1,15 @@
+{
+    "scenario": "Verify when same named .ts and .js file exists in the folder but no file is specified in tsconfig.json",
+    "projectRoot": "tests/cases/projects/jsFileCompilation",
+    "baselineCheck": true,
+    "declaration": true,
+    "project": "SameNameFilesNotSpecified",
+    "resolvedInputFiles": [
+        "lib.d.ts",
+        "SameNameFilesNotSpecified/a.ts"
+    ],
+    "emittedFiles": [
+        "SameNameFilesNotSpecified/a.js",
+        "SameNameFilesNotSpecified/a.d.ts"
+    ]
+}

tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/node/SameNameFilesNotSpecified/a.d.ts

@@ -0,0 +1 @@
+declare var test: number;

tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/node/SameNameFilesNotSpecified/a.js

@@ -0,0 +1 @@
+var test = 10;

tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/node/jsFileCompilationSameNameFilesNotSpecified.json

@@ -0,0 +1,15 @@
+{
+    "scenario": "Verify when same named .ts and .js file exists in the folder but no file is specified in tsconfig.json",
+    "projectRoot": "tests/cases/projects/jsFileCompilation",
+    "baselineCheck": true,
+    "declaration": true,
+    "project": "SameNameFilesNotSpecified",
+    "resolvedInputFiles": [
+        "lib.d.ts",
+        "SameNameFilesNotSpecified/a.ts"
+    ],
+    "emittedFiles": [
+        "SameNameFilesNotSpecified/a.js",
+        "SameNameFilesNotSpecified/a.d.ts"
+    ]
+}

tests/cases/project/jsFileCompilationSameNameFilesNotSpecified.json

@@ -0,0 +1,7 @@
+{
+  "scenario": "Verify when same named .ts and .js file exists in the folder but no file is specified in tsconfig.json",
+  "projectRoot": "tests/cases/projects/jsFileCompilation",
+  "baselineCheck": true,
+  "declaration": true,
+  "project": "SameNameFilesNotSpecified"
+}

tests/cases/projects/jsFileCompilation/SameNameFilesNotSpecified/a.js

@@ -0,0 +1 @@
+var test1 = 10; // Shouldnt get compiled

tests/cases/projects/jsFileCompilation/SameNameFilesNotSpecified/a.ts

@@ -0,0 +1 @@
+var test = 10;