feat(napi/parser): add .hasChanged() to MagicString (#8586)

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"

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

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| {

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',