fix: circular dep

Author: sxzz

src/index.ts

@@ -25,8 +25,11 @@ export const IsolatedDecl: UnpluginInstance<Options | undefined, false> =
     const filter = createFilter(options.include, options.exclude)
 
     const outputFiles: Record<string, string> = {}
+    function stripExt(filename: string) {
+      return filename.replace(/\.(.?)[jt]s$/, '')
+    }
     function addOutput(filename: string, source: string) {
-      outputFiles[filename.replace(/\.(.?)[jt]s$/, '')] = source
+      outputFiles[stripExt(filename)] = source
     }
 
     const rollup: Partial<Plugin> = {
@@ -200,14 +203,14 @@ export const IsolatedDecl: UnpluginInstance<Options | undefined, false> =
       }
       for (const i of typeImports) {
         const resolved = await resolve(i.source.value, id)
-        if (resolved) {
+        if (resolved && filter(resolved) && !outputFiles[stripExt(resolved)]) {
           let source: string
           try {
             source = await readFile(resolved, 'utf8')
           } catch {
             continue
           }
-          transform.call(this, source, resolved)
+          await transform.call(this, source, resolved)
         }
       }
     }

tests/__snapshots__/esbuild.test.ts.snap

@@ -21,6 +21,9 @@ export declare let num: Num;
 ",
   "// types.d.ts
 export type Num = number;
+",
+  "// types2.d.ts
+export type Num2 = number;
 ",
 ]
 `;
@@ -43,6 +46,8 @@ export {
 };
 ",
   "export type Num = number;
+",
+  "export type Num2 = number;
 ",
 ]
 `;

tests/__snapshots__/rolldown.test.ts.snap

@@ -20,6 +20,9 @@ let num = 1;
 export { hello, num };",
   "// types.d.ts
 export type Num = number;
+",
+  "// types2.d.ts
+export type Num2 = number;
 ",
 ]
 `;

tests/__snapshots__/rollup.test.ts.snap

@@ -18,6 +18,9 @@ export declare let num: Num;
 ",
   "// types.d.ts
 export type Num = number;
+",
+  "// types2.d.ts
+export type Num2 = number;
 ",
 ]
 `;

tests/fixtures/types.ts

@@ -1 +1,2 @@
+import type { Num2 } from './types2'
 export type Num = number

tests/fixtures/types2.ts

@@ -0,0 +1,2 @@
+import type { Num } from './types'
+export type Num2 = number