Apply stricter linting (#24)

.eslintrc.yml

@@ -3,14 +3,17 @@ env:
   node: true
   es2021: true
 extends:
-  - google
+  - airbnb
 parserOptions:
   ecmaVersion: 12
 rules: {
   indent: ["warn", 2],
   max-len: ["warn", 100],
+  no-console: 0,
+  no-undef: "error",
   no-unused-vars: ["error", {"varsIgnorePattern": "^_"}],
+  no-use-before-define: 0,
+  operator-linebreak: 0,
   require-jsdoc: 0,
-  semi: 0,
-  no-undef: "error"
+  semi: 0
 }