avoid_print

Avoid print calls in production code.

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:

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

GOOD:

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

GOOD:

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

GOOD:

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

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

linter:
  rules:
    - avoid_print

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

linter:
  rules:
    avoid_print: true

Unless stated otherwise, the documentation on this site reflects Dart 3.6.2. Page last updated on 2025-01-27. View source or report an issue.