git_hooks.dart file to use with git_hooks, and pubspec.yaml file changes for setting up git_hooks

analysis_options.yaml

include: package:flutter_lints/flutter.yaml

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

# For information on linting rules refer this
# https://dart.dev/tools/linter-rules

analyzer:
  exclude: [ build/**, tools/*]
  errors:
    unused_element: false

linter:
  rules:
    avoid_print: true
    always_declare_return_types: true
    avoid_empty_else: true
    use_enums: true
    always_use_package_imports: true
    avoid_relative_lib_imports: true
    avoid_type_to_string: true
    avoid_types_as_parameter_names: true
    cancel_subscriptions: true
    close_sinks: true
    discarded_futures: true
    hash_and_equals: true
    no_duplicate_case_values: true
    no_logic_in_create_state: true
    throw_in_finally: true
    unnecessary_statements: true
    unused_element: false

git_hooks.dart

import 'package:dart_pre_commit/dart_pre_commit.dart';
import 'package:git_hooks/git_hooks.dart';

void main(List<String> arguments) {
  Map<Git, UserBackFun> params = {
    Git.commitMsg: _conventionalCommitMsg,
    Git.preCommit: _preCommit,
  };
  GitHooks.call(arguments, params);
}

Future<bool> _preCommit() async {
  // Run dart_pre_commit package function to auto run various flutter commands
  final result = await DartPreCommit.run();
  return result.isSuccess;
}

Future<bool> _conventionalCommitMsg() async {
  var commitMsg = Utils.getCommitEditMsg();
  RegExp conventionCommitPattern = RegExp(
      r'''^(feat|fix|refactor|build|chore|perf|ci|docs|revert|style|test|merge){1}(\([\w\-\.]+\))?(!)?:( )?([\w ])+([\s\S]*)''');

  // Check if it matches conventional commit
  if (conventionCommitPattern.hasMatch(commitMsg)) {
    return true; // you can return true let commit go

  // If failed, check if issue is due to invalid tag
  } else if (!RegExp(r'(feat|fix|refactor|build|chore|perf|ci|docs|revert|style|test|merge)').hasMatch(commitMsg)) {
    print(
        '🛑 Invalid type used in commit message. It should be one of (feat|fix|refactor|build|chore|perf|ci|docs|revert|style|test|merge)');

  // else refer the dev to conventional commit site
  } else {
    print('🛑 Commit message should follow conventional commit pattern: https://www.conventionalcommits.org/en/v1.0.0/');
  }

  return false;
}

pubspec.yaml

...
dev_dependencies:
  # Code protocol enforcements
  flutter_lints: ^2.0.1
  dart_pre_commit: ^4.0.0
  git_hooks: ^1.0.0

# Due to some issue in dart_test_tools we're overriding it to an older version. Might replace in future
dependency_overrides:
  dart_test_tools: 4.5.3+1
  
dart_pre_commit:
  outdated: false # Remove this line if you want to keep all your dependencies upto date
  pull-up-dependencies: false
  lib-exports: false