library_names

Name libraries using lowercase_with_underscores.

This rule is available as of Dart 2.0.

DO name libraries using lowercase_with_underscores.

Some file systems are not case-sensitive, so many projects require filenames to be all lowercase. Using a separating character allows names to still be readable in that form. Using underscores as the separator ensures that the name is still a valid Dart identifier, which may be helpful if the language later supports symbolic imports.

BAD:

library peg-parser;

GOOD:

library peg_parser;

The lint file_names can be used to enforce the same kind of naming on the file.

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

linter:
  rules:
    - library_names

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