diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..d1da9f4
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,8 @@
+parserOptions:
+    sourceType: module
+
+extends:
+    "eslint:recommended"
+
+rules:
+    no-cond-assign: 0
diff --git a/package.json b/package.json
index ce072c6..3a44784 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "zip": "zip -j build/d3-spring-model.zip -- LICENSE README.md build/d3-spring-model.js build/d3-spring-model.min.js"
   },
   "devDependencies": {
+    "eslint": "4",
     "rollup": "0.36",
     "uglify-js": "git+https://github.com/mishoo/UglifyJS2.git#harmony"
   },