Add extra properties to FileLevelConstant

Author: fvictorio

src/ASTBuilder.ts

@@ -1244,6 +1244,8 @@ export class ASTBuilder
       typeName: type,
       name,
       initialValue: expression,
+      isDeclaredConst: true,
+      isImmutable: false,
     }
 
     return this._addMeta(node, ctx)

src/ast-types.ts

@@ -144,6 +144,8 @@ export interface FileLevelConstant extends BaseASTNode {
   typeName: TypeName
   name: string
   initialValue: Expression
+  isDeclaredConst: boolean
+  isImmutable: boolean
 }
 export interface UsingForDeclaration extends BaseASTNode {
   type: 'UsingForDeclaration'

test/ast.ts

@@ -737,6 +737,8 @@ describe('AST', () => {
         type: 'ElementaryTypeName',
         stateMutability: null,
       },
+      isDeclaredConst: true,
+      isImmutable: false,
     })
   })