3 Steps to Migrate to Lint 2.0

flutter pub add flutter_lints --dev

# This file configures the analyzer, which statically analyzes Dart code to
# check for errors, warnings, and lints.
#
# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
# invoked from the command line by running `flutter analyze`.

# The following line activates a set of recommended lints for Flutter apps,
# packages, and plugins designed to encourage good coding practices.
include: package:flutter_lints/flutter.yaml

linter:
 # The lint rules applied to this project can be customized in the
 # section below to disable rules from the `package:flutter_lints/flutter.yaml`
 # included above or to enable additional rules. A list of all available lints
 # and their documentation is published at
 # https://dart-lang.github.io/linter/lints/index.html.
 #
 # Instead of disabling a lint rule for the entire project in the
 # section below, it can also be suppressed for a single line of code
 # or a specific dart file by using the `// ignore: name_of_lint` and
 # `// ignore_for_file: name_of_lint` syntax on the line or in the file
 # producing the lint.
 rules:
   # avoid_print: false  # Uncomment to disable the `avoid_print` rule
   # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule

# Additional information about this file can be found at
# https://dart.dev/guides/language/analysis-options

dart fix --apply

@override
_MyWidgetState createState() => _MyWidgetState();

@override
State<MyWidget> createState() => _MyWidgetState();