Refactor

Author: sheetalkamat

src/compiler/program.ts

@@ -2483,7 +2483,9 @@ namespace ts {
             return runWithCancellationToken(() => {
                 const resolver = getTypeChecker().getEmitResolver(sourceFile, cancellationToken);
                 // Don't actually write any files since we're just getting diagnostics.
-                return ts.getDeclarationDiagnostics(getEmitHost(noop), resolver, sourceFile) || emptyArray;
+                const emitHost = getEmitHost(noop);
+                const result = transformNodes(resolver, emitHost, factory, options, sourceFile ? [sourceFile] : filter(emitHost.getSourceFiles(), isSourceFileNotJson), [transformDeclarations], /*allowDtsFiles*/ false);
+                return result.diagnostics || emptyArray;
             });
         }
 

src/compiler/transformers/declarations.ts

@@ -1,11 +1,5 @@
 /*@internal*/
 namespace ts {
-    export function getDeclarationDiagnostics(host: EmitHost, resolver: EmitResolver, file: SourceFile | undefined): DiagnosticWithLocation[] | undefined {
-        const compilerOptions = host.getCompilerOptions();
-        const result = transformNodes(resolver, host, factory, compilerOptions, file ? [file] : filter(host.getSourceFiles(), isSourceFileNotJson), [transformDeclarations], /*allowDtsFiles*/ false);
-        return result.diagnostics;
-    }
-
     function hasInternalAnnotation(range: CommentRange, currentSourceFile: SourceFile) {
         const comment = currentSourceFile.text.substring(range.pos, range.end);
         return stringContains(comment, "@internal");