feat: add --init option

It generate typeprof config file

Author: ahogappa

lib/typeprof/cli/cli.rb

@@ -11,6 +11,7 @@ def initialize(argv)
 
       output = nil
       rbs_collection_path = nil
+      initialize_config_file = false
 
       opt.separator ""
       opt.separator "Options:"
@@ -39,6 +40,7 @@ def initialize(argv)
       opt.separator ""
       opt.separator "Advanced options:"
       opt.on("--[no-]stackprof MODE", /\Acpu|wall|object\z/, "Enable stackprof (for debugging purpose)") {|v| cli_options[:stackprof] = v.to_sym }
+      opt.on("--init", 'Generate TypeProf configuration file') {|v| initialize_config_file = true}
 
       opt.separator ""
       opt.separator "LSP options:"
@@ -47,6 +49,11 @@ def initialize(argv)
 
       opt.parse!(argv)
 
+      if initialize_config_file
+        generate_config_file
+        exit 0
+      end
+
       if !cli_options[:lsp] && !lsp_options.empty?
         raise OptionParser::InvalidOption.new("lsp options with non-lsp mode")
       end
@@ -175,5 +182,9 @@ def set_profiler
         StackProf.results
       end
     end
+
+    def generate_config_file
+      File.write('typeprof.conf.jsonc', File.read(File.join(__dir__, 'typeprof.conf.jsonc')))
+    end
   end
 end

lib/typeprof/cli/typeprof.conf.jsonc

@@ -0,0 +1,6 @@
+{
+  "typeprof_version": "experimental",
+  "rbs_dir": "sig/"
+  // "analysis_unit_dirs": [],
+  // "diagnostic_severity": "warning"
+}