RucoCop extension that check RBS signatures.

DISCLAIMER: this extension is an ALPHA version, it could be not 100% stable

Check for:

• invalid RBS files;
• missing RBS method signatures;
• mismatching RBS method signatures arguments.

Please ⭐ if you like it.

Know limitations: some IDEs don't update the RBS cops offenses in real-time when a change is applied because only the .rb files are actively monitored.

• Add to Gemfile: gem 'rubocop-rbs', '~> 0.1.1' (and execute bundle);
• Add to .rubocop.yml:

require:
  - rubocop-rbs

• Execute rubocop: bundle exec rubocop
• To skip the cop from some files:

Rbs/MethodSignature:
  Exclude:
    - main.rb

• Rbs/MethodSignature: signature error: one or more signature errors in a RBS file:

main.rb:7:3: C: Rbs/MethodSignature: signature error, sig/main.rbs:1:0...1:3: Syntax error: cannot start a declaration, token=def (kDEF)
  def test_required_positionals(key1, key2); end
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Rbs/MethodSignature: missing signature: method signature not found in the RBS files:

main.rb:7:3: C: Rbs/MethodSignature: missing signature
  def test_required_positionals(key1, key2); end
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Rbs/MethodSignature: signature mismatch: method signature has different arguments from the one defined in the RBS files:

main.rb:7:3: C: Rbs/MethodSignature: signature mismatch, expected: (untyped, untyped, untyped) -> void
  def test_required_positionals(key1, key2); end
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

If you use this component just star it. A developer is more motivated to improve a project when there is some interest.

Or consider offering me a coffee, it's a small thing but it is greatly appreciated: about me.

• Mattia Roccoberton: author

The gem is available as open source under the terms of the MIT License.