diff --git a/Cargo.lock b/Cargo.lock
index 83ccc170673974..4ad204d17c0d4f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2935,9 +2935,9 @@ checksum = "d08889ec5408683408db66ad89e0e1f93dff55c73a4ccc71c427d5b277ee47e6"
 
 [[package]]
 name = "string_wizard"
-version = "0.0.25"
+version = "0.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6bb58bc508ea1c7f771111be7870d0c8079410c0fe7e026454c7baa7998cf2a5"
+checksum = "baa2ddbd6b187e9467902cf1c0f90266969897659ec5e7cefb3433ff5ffcf97d"
 dependencies = [
  "oxc_index",
  "oxc_sourcemap",
diff --git a/Cargo.toml b/Cargo.toml
index 39152cbab27ae6..8c1152de4f39f9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -191,7 +191,7 @@ sha1 = "0.10.6"
 simdutf8 = { version = "0.1.5", features = ["aarch64_neon"] }
 similar = "2.6.0"
 similar-asserts = "1.6.0"
-string_wizard = "0.0.25"
+string_wizard = "0.0.26"
 tempfile = "3.14.0"
 tokio = "1.42.0"
 tower-lsp = "0.20.0"
diff --git a/napi/parser/index.d.ts b/napi/parser/index.d.ts
index 0961371b7ad4a7..3cb4ccc4e7913d 100644
--- a/napi/parser/index.d.ts
+++ b/napi/parser/index.d.ts
@@ -11,6 +11,7 @@ export declare class MagicString {
   getUtf16ByteOffset(offset: number): number
   length(): number
   toString(): string
+  hasChanged(): boolean
   append(input: string): this
   appendLeft(index: number, input: string): this
   appendRight(index: number, input: string): this
diff --git a/napi/parser/src/magic_string.rs b/napi/parser/src/magic_string.rs
index e727fb4669efbd..8470fc8d42569a 100644
--- a/napi/parser/src/magic_string.rs
+++ b/napi/parser/src/magic_string.rs
@@ -122,6 +122,11 @@ impl MagicString {
         self.cell.borrow_dependent().to_string()
     }
 
+    #[napi]
+    pub fn has_changed(&self) -> bool {
+        self.cell.borrow_dependent().has_changed()
+    }
+
     #[napi]
     pub fn append(&mut self, input: String) -> &Self {
         self.cell.with_dependent_mut(|_, ms| {
diff --git a/napi/parser/test/magic_string.test.ts b/napi/parser/test/magic_string.test.ts
index 23a4e4a8b110b3..dd60ef31900c44 100644
--- a/napi/parser/test/magic_string.test.ts
+++ b/napi/parser/test/magic_string.test.ts
@@ -29,7 +29,9 @@ describe('simple', () => {
     expect(code.substring(ms.getUtf16ByteOffset(start), ms.getUtf16ByteOffset(end))).toEqual('测试');
 
     // Magic string manipulation.
+    expect(ms.hasChanged()).toBe(false);
     ms.remove(start, end).append(';');
+    expect(ms.hasChanged()).toBe(true);
     expect(ms.toString()).toEqual('const s: String = /* 🤨 */ "";');
   });
 
@@ -43,7 +45,6 @@ describe('simple', () => {
     });
     expect(map.toUrl()).toBeTypeOf('string');
     expect(map.toString()).toBeTypeOf('string');
-    console.log(map.toMap());
     expect(map.toMap()).toEqual({
       mappings:
         'CAAA,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC',