Fix transpiling when options specify incremental or tsbuildinfofile

Fixes microsoft#33184

Author: sheetalkamat

src/services/transpile.ts

@@ -57,6 +57,8 @@ namespace ts {
         options.rootDirs = undefined;
         options.declaration = undefined;
         options.composite = undefined;
+        options.incremental = undefined;
+        options.tsBuildInfoFile = undefined;
         options.declarationDir = undefined;
         options.out = undefined;
         options.outFile = undefined;

src/testRunner/unittests/services/transpile.ts

@@ -416,6 +416,18 @@ var x = 0;`, {
             options: { compilerOptions: { typeRoots: ["./folder"] }, fileName: "input.js", reportDiagnostics: true }
         });
 
+        transpilesCorrectly("Supports setting 'incremental'", "x;", {
+            options: { compilerOptions: { incremental: true }, fileName: "input.js", reportDiagnostics: true }
+        });
+
+        transpilesCorrectly("Supports setting 'composite'", "x;", {
+            options: { compilerOptions: { composite: true }, fileName: "input.js", reportDiagnostics: true }
+        });
+
+        transpilesCorrectly("Supports setting 'tsbuildinfo'", "x;", {
+            options: { compilerOptions: { incremental: true, tsBuildInfoFile: "./folder/config.tsbuildinfo" }, fileName: "input.js", reportDiagnostics: true }
+        });
+
         transpilesCorrectly("Correctly serialize metadata when transpile with CommonJS option",
             `import * as ng from "angular2/core";` +
             `declare function foo(...args: any[]);` +