Fix crash during strict typechecking #766
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Nil is dereferenced when typechecking this line in the Solargraph codebase at the :strict level: ``` loader.add library: library, version: nil ``` A function is looking at the wrong signature while analyzing code, leading to the arguments being passed to the typechecking function not being consistent. Exception: ``` /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:368:in `kwarg_problems_for': undefined method `name' for nil:NilClass (NoMethodError) from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:332:in `block (2 levels) in argument_problems_for' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:319:in `each' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:319:in `each_with_index' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:319:in `block in argument_problems_for' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:314:in `each' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:314:in `argument_problems_for' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:278:in `block in call_problems' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:251:in `each' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:251:in `call_problems' from /Users/broz/src/solargraph/lib/solargraph/type_checker.rb:47:in `problems' from /Users/broz/src/solargraph/lib/solargraph/shell.rb:155:in `block in typecheck' from /Users/broz/src/solargraph/lib/solargraph/shell.rb:153:in `each' from /Users/broz/src/solargraph/lib/solargraph/shell.rb:153:in `typecheck' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/thor-1.3.2/lib/thor/command.rb:28:in `run' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/thor-1.3.2/lib/thor/invocation.rb:127:in `invoke_command' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/thor-1.3.2/lib/thor.rb:538:in `dispatch' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/thor-1.3.2/lib/thor/base.rb:584:in `start' from /Users/broz/src/solargraph/bin/solargraph:5:in `<top (required)>' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/bin/solargraph:25:in `load' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/bin/solargraph:25:in `<top (required)>' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/cli/exec.rb:58:in `load' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/cli/exec.rb:58:in `kernel_load' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/cli/exec.rb:23:in `run' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/cli.rb:451:in `exec' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/vendor/thor/lib/thor/command.rb:28:in `run' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/vendor/thor/lib/thor.rb:527:in `dispatch' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/cli.rb:34:in `dispatch' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/vendor/thor/lib/thor/base.rb:584:in `start' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/cli.rb:28:in `start' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/exe/bundle:28:in `block in <top (required)>' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/lib/bundler/friendly_errors.rb:117:in `with_friendly_errors' from /Users/broz/.rbenv/versions/3.0.6/lib/ruby/gems/3.0.0/gems/bundler-2.5.4/exe/bundle:20:in `<top (required)>' from /Users/broz/.rbenv/versions/3.0.6/bin/bundle:25:in `load' from /Users/broz/.rbenv/versions/3.0.6/bin/bundle:25:in `<main>' ```
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Nil is dereferenced when typechecking this line in the Solargraph codebase at the :strict level:
A function is looking at the wrong signature while analyzing code, leading to the arguments being passed to the typechecking function not being consistent.
Exception: