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avoid_print

Contents
Stable
Flutter
Fix available

Avoid print calls in production code.

Details

#

DO avoid print calls in production code.

For production code, consider using a logging framework. If you are using Flutter, you can use debugPrint or surround print calls with a check for kDebugMode

BAD:

dart
void f(int x) {
  print('debug: $x');
  ...
}

GOOD:

dart
void f(int x) {
  debugPrint('debug: $x');
  ...
}

GOOD:

dart
void f(int x) {
  log('log: $x');
  ...
}

GOOD:

dart
void f(int x) {
  if (kDebugMode) {
      print('debug: $x');
  }
  ...
}

Enable

#

To enable the avoid_print rule, add avoid_print under linter > rules in your analysis_options.yaml file:

analysis_options.yaml
yaml
linter:
  rules:
    - avoid_print

If you're instead using the YAML map syntax to configure linter rules, add avoid_print: true under linter > rules:

analysis_options.yaml
yaml
linter:
  rules:
    avoid_print: true

Unless stated otherwise, the documentation on this site reflects Dart 3.8.0. Page last updated on 2025-03-07. View source or report an issue.