apply suggestions from review

package.json

@@ -32,7 +32,7 @@
     "e2e:test": "mix assets.build && cd test/e2e && npx playwright test",
     "js:test": "cd assets && npm install && npm run test",
     "test": "npm run js:test && npm run e2e:test",
-    "cover:merge": "node js-coverage.mjs",
+    "cover:merge": "node test/e2e/merge-coverage.mjs",
     "cover": "npm run test && npm run cover:merge",
     "cover:report": "npx monocart show-report cover/merged-js/index.html"
   }

test/e2e/test_helper.exs

@@ -17,7 +17,7 @@ Application.put_env(:phoenix_live_view, Phoenix.LiveViewTest.E2E.Endpoint,
   debug_errors: false
 )
 
-pid = self()
+Process.register(self(), :e2e_helper)
 
 defmodule Phoenix.LiveViewTest.E2E.ErrorHTML do
   def render(template, _), do: Phoenix.Controller.status_message_from_template(template)
@@ -114,7 +114,7 @@ defmodule Phoenix.LiveViewTest.E2E.Endpoint do
   defp health_check(conn, _opts), do: conn
 
   defp halt(%{request_path: "/halt"}, _opts) do
-    send(unquote(pid), :halt)
+    send(:e2e_helper, :halt)
     # this ensure playwright waits until the server force stops
     Process.sleep(:infinity)
   end
@@ -136,7 +136,7 @@ unless IEx.started?() do
   # reading from stdin
   spawn(fn ->
     IO.read(:stdio, :line)
-    send(pid, :halt)
+    send(:e2e_helper, :halt)
   end)
 
   receive do