Declaration comments for the interface declaration in .d.ts

Author: sheetalkamat

src/compiler/emitter.ts

@@ -2360,6 +2360,7 @@ module ts {
 
             function emitInterfaceDeclaration(node: InterfaceDeclaration) {
                 if (resolver.isDeclarationVisible(node)) {
+                    emitJsDocComments(node);
                     emitDeclarationFlags(node);
                     write("interface ");
                     emitSourceTextOfNode(node.name);

tests/baselines/reference/commentsInheritance.js

@@ -268,6 +268,7 @@ i2_i = i3_i;
 
 
 //// [commentsInheritance.d.ts]
+/** i1 is interface with properties*/
 interface i1 {
     i1_p1: number;
     i1_f1(): void;

tests/baselines/reference/commentsInterface.js

@@ -104,12 +104,14 @@ i3_i.nc_l(10);
 
 
 //// [commentsInterface.d.ts]
+/** this is interface 1*/
 interface i1 {
 }
 declare var i1_i: i1;
 interface nc_i1 {
 }
 declare var nc_i1_i: nc_i1;
+/** this is interface 2 with memebers*/
 interface i2 {
     x: number;
     foo: (b: number) => string;

tests/baselines/reference/commentsemitComments.js

@@ -159,6 +159,7 @@ declare class c {
     foo1(b: string): string;
 }
 declare var i: c;
+/** interface comments*/
 interface i1 {
     (a: number): number;
     new (b: string): any;