Filter Sorbet in backtrace

test/test_helper.rb

@@ -13,7 +13,7 @@
 require "debug"
 require "mocha/minitest"
 
-sorbet_paths = Gem.loaded_specs["sorbet-runtime"].full_require_paths.freeze
+sorbet_paths = T.let(Gem.loaded_specs["sorbet-runtime"].full_require_paths.freeze, T::Array[String])
 DEBUGGER__::CONFIG[:skip_path] = Array(DEBUGGER__::CONFIG[:skip_path]) + sorbet_paths
 
 minitest_reporter = if ENV["SPEC_REPORTER"]
@@ -28,3 +28,20 @@ class Test
     Minitest::Test.make_my_diffs_pretty!
   end
 end
+
+# based on https://github.com/minitest/minitest/blob/master/lib/minitest.rb
+class BacktraceWithoutSorbetFilter < Minitest::BacktraceFilter
+  extend T::Sig
+  sig { override.params(bt: T.nilable(T::Array[String])).returns(T::Array[String]) }
+  def filter(bt)
+    return ["No backtrace"] unless bt
+
+    return bt.dup if $DEBUG
+
+    bt.find_all do |line|
+      line !~ MT_RE && SORBET_PATHS.none? { |path| line.include?(path) }
+    end
+  end
+end
+
+Minitest.backtrace_filter = BacktraceWithoutSorbetFilter.new(sorbet_paths)