diff --git a/packages/ast-spec/src/base/LiteralBase.ts b/packages/ast-spec/src/base/LiteralBase.ts
index 01a480ddc3c..c878fe7b7aa 100644
--- a/packages/ast-spec/src/base/LiteralBase.ts
+++ b/packages/ast-spec/src/base/LiteralBase.ts
@@ -1,6 +1,8 @@
+import type { AST_NODE_TYPES } from '../ast-node-types';
 import type { BaseNode } from './BaseNode';
 
 export interface LiteralBase extends BaseNode {
+  type: AST_NODE_TYPES.Literal;
   raw: string;
   value: RegExp | bigint | boolean | number | string | null;
 }
diff --git a/packages/ast-spec/src/expression/literal/BigIntLiteral/spec.ts b/packages/ast-spec/src/expression/literal/BigIntLiteral/spec.ts
index c27a85543ff..2df33369cf7 100644
--- a/packages/ast-spec/src/expression/literal/BigIntLiteral/spec.ts
+++ b/packages/ast-spec/src/expression/literal/BigIntLiteral/spec.ts
@@ -1,8 +1,6 @@
-import type { AST_NODE_TYPES } from '../../../ast-node-types';
 import type { LiteralBase } from '../../../base/LiteralBase';
 
 export interface BigIntLiteral extends LiteralBase {
-  type: AST_NODE_TYPES.Literal;
   value: bigint | null;
   bigint: string;
 }
diff --git a/packages/ast-spec/src/expression/literal/BooleanLiteral/spec.ts b/packages/ast-spec/src/expression/literal/BooleanLiteral/spec.ts
index a2310a698d0..be7477f015c 100644
--- a/packages/ast-spec/src/expression/literal/BooleanLiteral/spec.ts
+++ b/packages/ast-spec/src/expression/literal/BooleanLiteral/spec.ts
@@ -1,8 +1,6 @@
-import type { AST_NODE_TYPES } from '../../../ast-node-types';
 import type { LiteralBase } from '../../../base/LiteralBase';
 
 export interface BooleanLiteral extends LiteralBase {
-  type: AST_NODE_TYPES.Literal;
   value: boolean;
   raw: 'false' | 'true';
 }
diff --git a/packages/ast-spec/src/expression/literal/NullLiteral/spec.ts b/packages/ast-spec/src/expression/literal/NullLiteral/spec.ts
index f520b7b3d45..03ff8a43c86 100644
--- a/packages/ast-spec/src/expression/literal/NullLiteral/spec.ts
+++ b/packages/ast-spec/src/expression/literal/NullLiteral/spec.ts
@@ -1,8 +1,6 @@
-import type { AST_NODE_TYPES } from '../../../ast-node-types';
 import type { LiteralBase } from '../../../base/LiteralBase';
 
 export interface NullLiteral extends LiteralBase {
-  type: AST_NODE_TYPES.Literal;
   value: null;
   raw: 'null';
 }
diff --git a/packages/ast-spec/src/expression/literal/NumberLiteral/spec.ts b/packages/ast-spec/src/expression/literal/NumberLiteral/spec.ts
index 8155bb45caf..5a6cc12a59c 100644
--- a/packages/ast-spec/src/expression/literal/NumberLiteral/spec.ts
+++ b/packages/ast-spec/src/expression/literal/NumberLiteral/spec.ts
@@ -1,7 +1,5 @@
-import type { AST_NODE_TYPES } from '../../../ast-node-types';
 import type { LiteralBase } from '../../../base/LiteralBase';
 
 export interface NumberLiteral extends LiteralBase {
-  type: AST_NODE_TYPES.Literal;
   value: number;
 }
diff --git a/packages/ast-spec/src/expression/literal/RegExpLiteral/spec.ts b/packages/ast-spec/src/expression/literal/RegExpLiteral/spec.ts
index ab45f651b76..f72b53c7956 100644
--- a/packages/ast-spec/src/expression/literal/RegExpLiteral/spec.ts
+++ b/packages/ast-spec/src/expression/literal/RegExpLiteral/spec.ts
@@ -1,8 +1,6 @@
-import type { AST_NODE_TYPES } from '../../../ast-node-types';
 import type { LiteralBase } from '../../../base/LiteralBase';
 
 export interface RegExpLiteral extends LiteralBase {
-  type: AST_NODE_TYPES.Literal;
   value: RegExp | null;
   regex: {
     pattern: string;
diff --git a/packages/ast-spec/src/expression/literal/StringLiteral/spec.ts b/packages/ast-spec/src/expression/literal/StringLiteral/spec.ts
index de83d9d20e1..32734f443e2 100644
--- a/packages/ast-spec/src/expression/literal/StringLiteral/spec.ts
+++ b/packages/ast-spec/src/expression/literal/StringLiteral/spec.ts
@@ -1,7 +1,5 @@
-import type { AST_NODE_TYPES } from '../../../ast-node-types';
 import type { LiteralBase } from '../../../base/LiteralBase';
 
 export interface StringLiteral extends LiteralBase {
-  type: AST_NODE_TYPES.Literal;
   value: string;
 }