Add eslint configuration

Author: fredj

.eslintrc

@@ -0,0 +1,6 @@
+{
+  "extends": "openlayers",
+  "rules": {
+    "no-var": "off"
+  }
+}

.gitignore

@@ -0,0 +1 @@
+node_modules

index.js

@@ -37,7 +37,7 @@ module.exports = function(fonts, size, lineHeight) {
     }
     var weight = 'normal';
     var style = 'normal';
-    var fontFamilies = []
+    var fontFamilies = [];
     var haveWeight, haveStyle;
     for (var i = 0, ii = fonts.length; i < ii; ++i) {
       var font = fonts[i];
@@ -62,7 +62,7 @@ module.exports = function(fonts, size, lineHeight) {
         weight = maybeWeight;
       }
       var fontFamily = parts.join(sp)
-          .replace('Klokantech Noto Sans', 'Noto Sans');
+        .replace('Klokantech Noto Sans', 'Noto Sans');
       if (fontFamily.indexOf(sp) !== -1) {
         fontFamily = '"' + fontFamily + '"';
       }
@@ -72,4 +72,4 @@ module.exports = function(fonts, size, lineHeight) {
     cssData = fontCache[fonts] = [style, weight, fontFamilies];
   }
   return cssData[0] + sp + cssData[1] + sp + size + 'px' + (lineHeight ? '/' + lineHeight : '') + sp + cssData[2];
-}
+};

package.json

@@ -12,5 +12,12 @@
     "font"
   ],
   "author": "Andreas Hocevar",
-  "license": "BSD-2-Clause"
+  "license": "BSD-2-Clause",
+  "scripts": {
+    "lint": "eslint *.js"
+  },
+  "devDependencies": {
+    "eslint": "^5.15.0",
+    "eslint-config-openlayers": "^11.0.0"
+  }
 }