library_prefixes

Use lowercase_with_underscores when specifying a library prefix.

DO use lowercase_with_underscores when specifying a library prefix.

BAD:

import 'dart:math' as Math;
import 'dart:json' as JSON;
import 'package:js/js.dart' as JS;
import 'package:javascript_utils/javascript_utils.dart' as jsUtils;

GOOD:

import 'dart:math' as math;
import 'dart:json' as json;
import 'package:js/js.dart' as js;
import 'package:javascript_utils/javascript_utils.dart' as js_utils;

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

linter:
  rules:
    - library_prefixes

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

linter:
  rules:
    library_prefixes: true

Unless stated otherwise, the documentation on this site reflects Dart 3.7.0. Page last updated on 2025-01-27. View source or report an issue.