Use vernier

Author: udzura

Gemfile

@@ -13,4 +13,4 @@ gem "test-unit", "~> 3.0"
 gem "rbs-inline", :require => false
 gem "steep", ">= 1.8.1"
 
-gem "ruby-prof"
+gem "vernier"

Gemfile.lock

@@ -62,7 +62,6 @@ GEM
     rbs-inline (0.11.0)
       prism (>= 0.29, < 1.3)
       rbs (>= 3.5.0)
-    ruby-prof (1.7.1)
     securerandom (0.3.1)
     steep (1.9.4)
       activesupport (>= 5.1)
@@ -89,6 +88,7 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.6.0)
     uri (1.0.3)
+    vernier (1.8.0)
 
 PLATFORMS
   aarch64-linux-gnu
@@ -107,9 +107,9 @@ DEPENDENCIES
   ostruct
   rake (~> 13.0)
   rbs-inline
-  ruby-prof
   steep (>= 1.8.1)
   test-unit (~> 3.0)
+  vernier
   wardite!
 
 BUNDLED WITH