build(lint): update eslint rules to automatically fix es5 code #54

Author: jankapunkt

.eslintrc

@@ -34,6 +34,13 @@
     "no-console": [
       "error"
     ],
+    "no-var": [
+      "error"
+    ],
+    "prefer-const": ["error", {
+      "destructuring": "any",
+      "ignoreReadBeforeAssign": false
+    }],
     "no-unused-vars": [
       "error", 
       { 

package.json

@@ -38,7 +38,9 @@
     "pretest": "./node_modules/.bin/eslint lib test index.js",
     "test": "NODE_ENV=test ./node_modules/.bin/mocha 'test/**/*_test.js'",
     "test-debug": "NODE_ENV=test ./node_modules/.bin/mocha  --inspect --debug-brk 'test/**/*_test.js'",
-    "test:coverage": "NODE_ENV=test nyc --reporter=html --reporter=text ./node_modules/.bin/mocha 'test/**/*_test.js'"
+    "test:coverage": "NODE_ENV=test nyc --reporter=html --reporter=text ./node_modules/.bin/mocha 'test/**/*_test.js'",
+    "lint": "npx eslint .",
+    "lint:fix": "npx eslint . --fix"
   },
   "repository": {
     "type": "git",