Change from ArgumentError to TypeError where TypeError makes more sense

lib/capybara/rack_test/node.rb

@@ -18,7 +18,7 @@ class Capybara::RackTest::Node < Capybara::Driver::Node
 
   def set(value)
     if (Array === value) && !multiple?
-      raise ArgumentError.new "Value cannot be an Array when 'multiple' attribute is not present. Not a #{value.class}"
+      raise TypeError.new "Value cannot be an Array when 'multiple' attribute is not present. Not a #{value.class}"
     end
 
     if radio?

lib/capybara/session.rb

@@ -67,7 +67,7 @@ module Capybara
     attr_accessor :synchronized
 
     def initialize(mode, app=nil)
-      raise ArgumentError, "The second parameter to Session::new should be a rack app if passed." if app && !app.respond_to?(:call)
+      raise TypeError, "The second parameter to Session::new should be a rack app if passed." if app && !app.respond_to?(:call)
       @mode = mode
       @app = app
       if Capybara.run_server and @app and driver.needs_server?
@@ -393,7 +393,7 @@ module Capybara
           idx = args[0]
           all(:frame, minimum: idx+1)[idx]
         else
-          raise ArgumentError
+          raise TypeError
         end
       end
 

spec/session_spec.rb

@@ -5,6 +5,6 @@ RSpec.describe Capybara::Session do
   it "verifies a passed app is a rack app" do
     expect do
       Capybara::Session.new(:unknown, { random: "hash"})
-    end.to raise_error ArgumentError, "The second parameter to Session::new should be a rack app if passed."
+    end.to raise_error TypeError, "The second parameter to Session::new should be a rack app if passed."
   end
 end