diff --git a/.eslintrc.yml b/.eslintrc.yml
new file mode 100644
index 0000000..e12bf4c
--- /dev/null
+++ b/.eslintrc.yml
@@ -0,0 +1,8 @@
+env:
+  es2020: true
+  node: true
+extends: 'eslint:recommended'
+parserOptions:
+  ecmaVersion: 11
+  sourceType: module
+rules: {}
diff --git a/index.js b/index.js
index d143ba2..2ab8773 100644
--- a/index.js
+++ b/index.js
@@ -11,7 +11,7 @@ function random (range) {
 }
 
 function greet () {
-  console.log(greetings[random(greetings.length)]);
+  return greetings[random(greetings.length)];
 }
 
 export {
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..79e5fe2
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,878 @@
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+    "supports-color": {
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+        "lodash": "^4.17.14",
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+      "dev": true,
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+}
diff --git a/package.json b/package.json
index ad12ea9..b28c84a 100644
--- a/package.json
+++ b/package.json
@@ -5,8 +5,12 @@
   "main": "index.js",
   "type": "module",
   "scripts": {
-    "test": "node test.js"
+    "test": "npm run lint && node test.js",
+    "lint": "eslint *.js"
   },
   "author": "Myles Borins <mylesborins@github.com>",
-  "license": "MIT"
+  "license": "MIT",
+  "devDependencies": {
+    "eslint": "^7.6.0"
+  }
 }
diff --git a/test.js b/test.js
index 4b76171..feb3e84 100644
--- a/test.js
+++ b/test.js
@@ -1,3 +1,5 @@
+import { equal } from 'assert';
+
 import { greet } from './index.js';
 
-greet();
+equal(typeof greet(), 'string', 'greeting should return a string');