Add spreadObjectLiteralAssignment. This is an AST node for spread in ObjectLiteralExpression.

Author: Kanchalai Tanglertsampan

src/compiler/types.ts

@@ -316,6 +316,7 @@ namespace ts {
         // Property assignments
         PropertyAssignment,
         ShorthandPropertyAssignment,
+        SpreadObjectLiteralAssignment,
 
         // Enum
         EnumMember,
@@ -668,6 +669,12 @@ namespace ts {
         objectAssignmentInitializer?: Expression;
     }
 
+    // @kind(SyntaxKind.SpreadObjectLiteralAssignment)
+    export interface SpreadObjectLiteralAssignment extends ObjectLiteralElementLike, SpreadElementExpression {
+        _spreadObjectLiteralAssignmentBrand: any;
+        dotDotDotToken?: Node;
+    }
+
     // SyntaxKind.VariableDeclaration
     // SyntaxKind.Parameter
     // SyntaxKind.BindingElement