test: add Debug test

README.md

@@ -1,6 +1,8 @@
-# webpack-strip-debug-loader
+# [`webpack-strip-debug-loader`](https://www.npmjs.com/package/webpack-strip-debug-loader)
 
-Removes [`debug`](https://www.npmjs.com/package/debug) usage from your source code during Webpack builds.
+![CI](https://github.com/morganney/webpack-strip-debug-loader/actions/workflows/ci.yml/badge.svg)
+
+Removes [`debug`](https://www.npmjs.com/package/debug) usage from your source code during webpack builds.
 
 ## Usage
 
@@ -22,13 +24,13 @@ Just make simple debug statements.
 import { Debug } from 'webpack-strip-debug-loader'
 
 // Or use require if you prefer that
-const { Debug } = require("webpack-strip-debug-loader")
+const { Debug } = require('webpack-strip-debug-loader')
 
-const debug = Debug("feature")
+const debug = Debug('feature')
 const debugFoo = Debug('foo')
 
 if (somethingOfInterestHappens) {
-  debug("something happened")
+  debug('something happened')
 }
 
 if (foo) {
@@ -43,7 +45,7 @@ if (foo) {
 
 ### Stripping
 
-To remove the logging and bundling of debug usage register this loader with Webpack.
+To remove the logging and bundling of debug usage register this loader with webpack.
 
 ```js
 module: {

__tests__/debug.js

@@ -1,19 +1,12 @@
-import { jest } from '@jest/globals'
-
 import { Debug } from '../src/debug.js'
 
-jest.mock('debug')
-
-let debug = null
-
+/**
+ * Testing that it wraps `debug` has to wait for better
+ * support for mocks when using ESM
+ * @see https://github.com/facebook/jest/pull/10976
+ */
 describe('Debug', () => {
-  beforeAll(async () => {
-    ;({ default: debug } = await import('debug'))
-  })
-
-  it('wraps debug', () => {
-    Debug('namespace')
-
-    expect(debug).toHaveBeenCalled()
+  it('returns a function', () => {
+    expect(Debug('test')).toEqual(expect.any(Function))
   })
 })

babel.config.cjs

@@ -0,0 +1,20 @@
+module.exports = function (api) {
+  const env = process.env.NODE_ENV || 'development'
+  const presets = [
+    [
+      '@babel/preset-env',
+      {
+        targets: {
+          browsers: ['defaults', 'current node']
+        },
+        modules: 'commonjs'
+      }
+    ]
+  ]
+
+  api.cache(() => env === 'development')
+
+  return {
+    presets
+  }
+}

jest.config.js

@@ -10,11 +10,6 @@ export default {
      * @see https://github.com/webpack/loader-runner/issues/61
      */
     '!**/__tests__/loader.js',
-    /**
-     * Has to wait for better support for mocks when using ESM
-     * @see https://github.com/facebook/jest/pull/10976
-     */
-    '!**/__tests__/debug.js',
     '!**/__tests__/__fixtures__/*.js'
   ],
   transform: {}