Enum and enum literal

Author: Arthur Ozga

src/compiler/checker.ts

@@ -2266,7 +2266,8 @@ namespace ts {
                     return createKeywordTypeNode(SyntaxKind.BooleanKeyword);
                 }
                 if (type.flags & TypeFlags.Enum) {
-                    throw new Error ("enums not implemented")
+                    const name = createNameFromSymbol(type.symbol);
+                    return createTypeReferenceNode(name, /*typeArguments*/ undefined);
                 }
                 if (type.flags & (TypeFlags.StringLiteral)) {
                     return createLiteralTypeNode((createLiteral((<LiteralType>type).text)));
@@ -2278,7 +2279,8 @@ namespace ts {
                     return (<IntrinsicType>type).intrinsicName === "true" ? createTrue() : createFalse();
                 }
                 if (type.flags & TypeFlags.EnumLiteral) {
-                    throw new Error("enum literal not implemented");
+                    const name = createNameFromSymbol(type.symbol);
+                    return createTypeReferenceNode(name, /*typeArguments*/ undefined);
                 }
                 if (type.flags & TypeFlags.Void) {
                     return createKeywordTypeNode(SyntaxKind.VoidKeyword);

tests/cases/fourslash/codeFixClassImplementInterfacePropertyEnum.ts

@@ -0,0 +1,13 @@
+/// <reference path='fourslash.ts' />
+
+// @lib: es2017
+
+//// enum E { a,b,c }
+//// interface I {
+////     a: E;
+//// }
+//// class C implements I {[| |]}
+
+verify.rangeAfterCodeFix(`
+    a: E;
+`);

tests/cases/fourslash/codeFixClassImplementInterfacePropertyEnumLiteral.ts

@@ -0,0 +1,13 @@
+/// <reference path='fourslash.ts' />
+
+// @lib: es2017
+
+//// enum E { a,b,c }
+//// interface I {
+////     a: E.a
+//// }
+//// class C implements I {[| |]}
+
+verify.rangeAfterCodeFix(`
+    a: E.a;
+`);