diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..e717f5e
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,13 @@
+# http://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644
index 0000000..2074ceb
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1,40 @@
+{
+  "extends": ["eslint:recommended", "plugin:es5/no-es2015"],
+  "env": {
+    "browser": true,
+    "node": true
+},
+  "rules": {
+    "semi": ["error", "always"],
+    "quotes": ["error", "double"]
+  },
+  "globals": {
+    "app": true,
+    "alert": true,
+    "confirm": true,
+    "Folder": true,
+    "File": true,
+    "DocumentColorSpace": true,
+    "IllustratorSaveOptions": true,
+    "ZOrderMethod": true,
+    "TextType": true,
+    "Window": true,
+    "BlendModes": true,
+    "ElementPlacement": true,
+    "PointType": true,
+    "ExportType": true,
+    "ExportOptionsPNG8": true,
+    "ExportOptionsPNG24": true,
+    "ExportOptionsJPEG": true,
+    "ExportOptionsSVG": true,
+    "SVGFontSubsetting": true,
+    "SVGDocumentEncoding": true,
+    "SVGDTDVersion": true,
+    "SVGCSSPropertyLocation": true,
+    "SaveOptions": true,
+    "Event": true,
+    "$": true,
+    "it": true,
+    "describe": true
+  }
+}
diff --git a/ai2html.js b/ai2html.js
index 861de40..d582bfa 100644
--- a/ai2html.js
+++ b/ai2html.js
@@ -32,6 +32,9 @@
 // - Go to the folder containing your Illustrator file. Inside will be a folder called ai2html-output.
 // - Open the html files in your browser to preview your output.
 
+// Globals available from Illustrator
+// https://www.adobe.com/devnet/illustrator/scripting.html
+
 function main() {
 // Enclosing scripts in a named function (and not an anonymous, self-executing
 // function) has been recommended as a way to minimise intermittent "MRAP" errors.
diff --git a/package.json b/package.json
index 357c28a..7f2bc8e 100644
--- a/package.json
+++ b/package.json
@@ -2,10 +2,12 @@
   "name": "ai2html",
   "version": "0.81.4",
   "description": "A script for Adobe Illustrator that converts your Illustrator artwork into an html page.",
-"main": "./ai2html.js",
-"scripts": {
+  "main": "./ai2html.js",
+  "scripts": {
     "test": "mocha --check-leaks",
-    "prepublishOnly": "./prepublish.sh"
+    "prepublishOnly": "./prepublish.sh",
+    "lint": "eslint ai2html*.js test/**/*js",
+    "lintFix": "eslint ai2html.js test/**/*js --fix"
   },
   "repository": {
     "type": "git",
@@ -17,6 +19,8 @@
     "url": "https://github.com/newsdev/ai2html/issues"
   },
   "devDependencies": {
+    "eslint": "^5.11.1",
+    "eslint-plugin-es5": "^1.3.1",
     "mocha": ">=3.2.0"
   },
   "homepage": "https://github.com/newsdev/ai2html#readme"