Add CJS priority for Puppeteer environment

package.json

@@ -1,6 +1,6 @@
 {
     "name": "jest-puppeteer-react",
-    "version": "12.0.0",
+    "version": "12.0.1",
     "description": "screenshot tests for your react components in chromium using puppeteer & jest",
     "main": "src/index.js",
     "types": "src/index.d.ts",

src/PuppeteerReactEnvironment.js

@@ -1,13 +1,27 @@
 const path = require('path');
 const { TestEnvironment } = require('jest-environment-puppeteer');
+const { promisify } = require('util');
+const fs = require('fs');
 
 class PuppeteerReactEnvironment extends TestEnvironment {
     async setup() {
         await super.setup();
 
         const rootPath = process.cwd(); // of your project under test
 
-        const config = require(path.join(rootPath, 'jest-puppeteer-react.config.js'));
+        const configName = 'jest-puppeteer-react.config';
+        const statPromisified = promisify(fs.stat);
+
+        let configExt = '.cjs';
+
+        try {
+            await statPromisified(path.join(process.cwd(), `${configName}${configExt}`));
+        } catch (e) {
+            // Fallback extension if CommonJS module not exist
+            configExt = '.js';
+        }
+
+        const config = require(path.join(rootPath, `${configName}${configExt}`));
 
         if (!config.port) {
             config.port = 1111;

src/global.js

@@ -16,19 +16,19 @@ const DIR = path.join(os.tmpdir(), 'jest_puppeteer_react_global_setup');
 let webpackDevServer;
 
 const getConfig = async () => {
-    const congifName = 'jest-puppeteer-react.config';
+    const configName = 'jest-puppeteer-react.config';
     const statPromisified = promisify(fs.stat);
 
     let configExt = '.cjs';
 
     try {
-        await statPromisified(path.join(process.cwd(), `${congifName}${configExt}`));
+        await statPromisified(path.join(process.cwd(), `${configName}${configExt}`));
     } catch (e) {
         // Fallback extension if CommonJS module not exist
         configExt = '.js';
     }
 
-    return require(path.join(process.cwd(), `${congifName}${configExt}`));
+    return require(path.join(process.cwd(), `${configName}${configExt}`));
 };
 
 module.exports.setup = async function setup(jestConfig) {