chore: adjust eslint rules

Author: xidedix

Diff for: .eslintrc.json

@@ -133,7 +133,7 @@
     "func-call-spacing": "error",
     "func-name-matching": "error",
     "func-names": "off",
-    "func-style": ["error", "declaration"],
+    "func-style": ["error", "declaration", { "allowArrowFunctions": true }],
     "id-blacklist": "error",
     "id-length": "off",
     "id-match": "error",
@@ -158,7 +158,7 @@
     "newline-per-chained-call": ["error", { "ignoreChainWithDepth": 5 }],
     "new-parens": "error",
     "no-array-constructor": "error",
-    "no-bitwise": "error",
+    "no-bitwise": ["error", { "int32Hint": true }],
     "no-continue": "off",
     "no-inline-comments": "off",
     "no-lonely-if": "error",

Diff for: .gitignore

@@ -1 +1,2 @@
+.idea
 node_modules