[meta] move .eslintignore to ignorePatterns

Author: ljharb

.eslintignore

@@ -1,8 +1,13 @@
 {
+  "root": true,
   "extends": [
     "airbnb-base",
     "plugin:flowtype/recommended"
   ],
+  "ignorePatterns": [
+    "lib/",
+    "reports/",
+  ],
   "parser": "@babel/eslint-parser",
   "plugins": [
     "flowtype",

.eslintrc

@@ -22,7 +22,7 @@
     "create": "node ./scripts/create-rule",
     "flow": "flow",
     "lint:fix": "npm run lint -- --fix",
-    "lint": "eslint .",
+    "lint": "eslint --ext=js,mjs,cjs,ts,tsx .",
     "prepublish": "not-in-publish || npm run prepublishOnly",
     "prepublishOnly": "safe-publish-latest && npm run lint && npm run flow && npm run jest && npm run build",
     "pretest": "npm run lint:fix && npm run flow",