diff --git a/jest.config.ts b/jest.config.js
similarity index 83%
rename from jest.config.ts
rename to jest.config.js
index 3971d8c..c248fd2 100644
--- a/jest.config.ts
+++ b/jest.config.js
@@ -1,6 +1,7 @@
-import fs = require('fs');
-import os = require('os');
-import path = require('path');
+/* eslint-disable @typescript-eslint/no-require-imports */
+const fs = require('fs');
+const os = require('os');
+const path = require('path');
 
 const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-setup-docker-action-'));
 
@@ -9,9 +10,7 @@ process.env = Object.assign({}, process.env, {
   GITHUB_REPOSITORY: 'docker/setup-docker-action',
   RUNNER_TEMP: path.join(tmpDir, 'runner-temp'),
   RUNNER_TOOL_CACHE: path.join(tmpDir, 'runner-tool-cache')
-}) as {
-  [key: string]: string;
-};
+});
 
 module.exports = {
   clearMocks: true,