diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 0000000..17b3f18
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1,3 @@
+node_modules
+coverage
+__fixtures__
diff --git a/jest.config.js b/jest.config.js
new file mode 100644
index 0000000..95495de
--- /dev/null
+++ b/jest.config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  testEnvironment: 'node'
+}
diff --git a/package.json b/package.json
index f049075..2b80240 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "Transform `process.env.FIELD` into environment variables with dotenv.",
   "main": "index.js",
   "scripts": {
-    "pretest": "eslint *.js",
+    "pretest": "eslint .",
     "test": "jest",
     "posttest": "jest --coverage"
   },
diff --git a/test.js b/test.js
index 3952012..1a468f2 100644
--- a/test.js
+++ b/test.js
@@ -1,4 +1,4 @@
-/* eslint-env mocha */
+/* eslint-env jest */
 
 const pluginTester = require('babel-plugin-tester')