diff --git a/src/file.ts b/src/file.ts
index 9d42912..518f71f 100644
--- a/src/file.ts
+++ b/src/file.ts
@@ -1,22 +1,16 @@
-import { Extension, ScanResult, ReportVO, PackageJson, FileImportDescription } from "./type";
+import { concat, filter, isArray, isString, join as arrayJoin, keys, map } from "@newdash/newdash";
+import { includes } from "@newdash/newdash/includes";
+import { readFileSync } from "fs";
 import { sync } from "glob";
-import { join as pathJoin, dirname, join, normalize, relative } from "path";
-import { join as arrayJoin, map, isArray, isString, concat, filter, keys } from "@newdash/newdash";
-import { includes } from "@newdash/newdash/includes"
-import { readFileSync, writeFileSync, existsSync } from "fs";
+import { dirname, join, join as pathJoin, normalize, relative } from "path";
 import { cwd } from "process";
-import { tmpdir, platform } from "os";
-import { exec } from "child_process";
+import { Extension, FileImportDescription, PackageJson, ReportVO, ScanResult } from "./type";
 
 require.extensions[".ts"] = require.extensions[".js"]
 require.extensions[".jsx"] = require.extensions[".js"]
 require.extensions[".tsx"] = require.extensions[".js"]
 require.extensions[".mjs"] = require.extensions[".js"]
 
-const extensions = [
-  "js", "jsx", "ts", "tsx", "mjs"
-]
-
 const { resolve } = require
 
 export const allDependencies = (absPath: string) => {
@@ -120,12 +114,3 @@ export const mapScanResultToReportVO = (result: ScanResult): ReportVO => {
   return rt;
 }
 
-export const writeFileToTmpDirAndOpenIt = (filename: string, content: string) => {
-  const path = join(tmpdir(), filename);
-  writeFileSync(path, content);
-  if (platform() === "win32") {
-    exec(`start ${path}`)
-  } else {
-    exec(`open ${path}`)
-  }
-}
diff --git a/src/index.ts b/src/index.ts
index 719b401..8a396a6 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,7 +2,5 @@
 
 export { scanDirectoryWithResult } from "./scanner"
 
-export { writeFileToTmpDirAndOpenIt } from "./file"
-
 export { calculateCycleImport } from "./graph"