fix: use import with extension in generated .d.mts file (#202)

Author: userquin

example/package.json

@@ -10,8 +10,16 @@
     },
     "./utils": "./dist/utils.mjs"
   },
-  "main": "./dist/module.cjs",
-  "types": "./dist/types.d.ts",
+  "main": "dist/module.mjs",
+  "types": "dist/types.d.ts",
+  "typesVersions": {
+    "*": {
+      "*": [
+        "./dist/*",
+        "./*"
+      ]
+    }
+  },
   "files": [
     "dist"
   ],

src/commands/build.ts

@@ -178,7 +178,7 @@ export type { ${typeExports[0].names.join(', ')} } from './module'
 
   await fsp.writeFile(dtsFile, dtsContents, 'utf8')
   if (!existsSync(dtsFileMts)) {
-    await fsp.writeFile(dtsFileMts, dtsContents, 'utf8')
+    await fsp.writeFile(dtsFileMts, dtsContents.replaceAll('./module', './module.js'), 'utf8')
   }
 }