diff --git a/src/Generator.ts b/src/Generator.ts
index 55908e2..8113cf8 100644
--- a/src/Generator.ts
+++ b/src/Generator.ts
@@ -463,6 +463,7 @@ export class Generator {
           ${
             syntheticalConfig.typesOnly
               ? dedent`
+                // @ts-ignore
                 type FileData = File
 
                 ${content.join('\n\n').trim()}
diff --git a/tests/__snapshots__/Generator.test.ts.snap b/tests/__snapshots__/Generator.test.ts.snap
index dee58ff..3fa16b1 100644
--- a/tests/__snapshots__/Generator.test.ts.snap
+++ b/tests/__snapshots__/Generator.test.ts.snap
@@ -764,6 +764,7 @@ exports[`Generator 只生成类型代码并写入文件: 接口文件 1`] = `
 
 /* 该文件由 yapi-to-typescript 自动生成，请勿直接修改！！！ */
 
+// @ts-ignore
 type FileData = File
 
 /**