Add types
merge when Microsoft/TypeScript#20735 hits

merge when Microsoft/TypeScript#20735 hits
Add emitOnlyDeclarations flag
Microsoft · mhegazy · Jan 25, 2018 · nojvek · nojvek · Dec 16, 2017
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
+            if (options.noEmitJs && !options.declaration) {
+                programDiagnostics.add(createCompilerDiagnostic(Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "noEmitJs", "declaration"));
+            }
+
diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
@@ -231,6 +231,13 @@ namespace ts {
            category: Diagnostics.Basic_Options,
            description: Diagnostics.Do_not_emit_outputs,
        },
+        {
+            name: "noEmitJs",
diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
+            name: "noEmitJs",
+            type: "boolean",
+            showInSimplifiedHelpView: true,
+            category: Diagnostics.Basic_Options,
diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json
@@ -2776,6 +2776,10 @@
        "category": "Message",
        "code": 6013
    },
+    "Do not emit js outputs.": {
diff --git a/src/server/server.ts b/src/server/server.ts
@@ -980,7 +980,7 @@ namespace ts.server {
    };

    const ioSession = new IOSession(options);
-    process.on("uncaughtException", err => {
+    process.on("uncaughtException", (err: any) => {