Upgrade: eslint v6

lib/rules.js

@@ -8,15 +8,32 @@
 // ------------------------------------------------------------------------------
 // Requirements
 // ------------------------------------------------------------------------------
-
-const builtInRules = require("eslint/lib/built-in-rules-index");
+const eslintVersion = require("eslint/package.json").version;
 const { getNonFixableRule } = require("./utils");
+const builtinRules = {};
+
+// eslint v6 restructed its codebase
+// TODO: this might be unreliable
+if (eslintVersion >= "6.0.0") {
+    const builtin = require("eslint/lib/rules"); // eslint-disable-line node/no-missing-require
+
+    for (const [ruleId, rule] of builtin) {
+        builtinRules[ruleId] = rule;
+    }
+} else {
+    const builtin = require("eslint/lib/built-in-rules-index"); // eslint-disable-line node/no-missing-require
+
+    Object.keys(builtin)
+        .reduce((acc, cur) => {
+            acc[cur] = builtin[cur];
+            return acc;
+        }, builtinRules);
+}
+
 const allRules = {};
 
-Object.keys(builtInRules).reduce((acc, cur) => {
+Object.keys(builtinRules).reduce((acc, cur) => {
     acc[cur] = getNonFixableRule(cur);
     return acc;
 }, allRules);
-
-
 module.exports = allRules;

package.json

@@ -21,14 +21,14 @@
   "devDependencies": {
     "@not-an-aardvark/node-release-script": "^0.1.0",
     "@types/eslint": "^4.16.6",
-    "eslint": "^5.13.0",
+    "eslint": "^6.0.0",
     "eslint-config-eslint": "^5.0.1",
     "eslint-plugin-autofix": "0.0.4",
-    "eslint-plugin-eslint-plugin": "^2.0.1",
-    "eslint-plugin-node": "^8.0.0",
+    "eslint-plugin-eslint-plugin": "^2.1.0",
+    "eslint-plugin-node": "^9.1.0",
     "eslint-plugin-self": "^1.2.0",
-    "husky": "^1.3.1",
-    "mocha": "^5.2.0"
+    "husky": "^2.4.1",
+    "mocha": "^6.1.4"
   },
   "peerDependencies": {
     "eslint": ">= 5.0.0"

tests/lib/rules/quotes.js

@@ -7,7 +7,7 @@
 const rule = require("../../../lib/rules").quotes,
     RuleTester = require("eslint").RuleTester;
 
-const ruleTester = new RuleTester();
+const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 9 } });
 
 ruleTester.run("quotes", rule, {
     valid: [