Generate module and optimize LiveView diffing

lib/mix/tasks/heroicons/build.ex

@@ -0,0 +1,35 @@
+defmodule Mix.Tasks.Heroicons.Build do
+  # Builds a new lib/heroicons.ex with bundled icon set.
+  @moduledoc false
+  @shortdoc false
+  use Mix.Task
+
+  @target_file "lib/heroicons.ex"
+
+  def run(_args) do
+    vsn = Mix.Tasks.Heroicons.Update.vsn()
+    svgs_path = Mix.Tasks.Heroicons.Update.svgs_path()
+    outlined = Path.wildcard(Path.join(svgs_path, "outline/**/*.svg"))
+    solid = Path.wildcard(Path.join(svgs_path, "solid/**/*.svg"))
+    mini = Path.wildcard(Path.join(svgs_path, "mini/**/*.svg"))
+    ordered_icons = outlined ++ solid ++ mini
+
+    icons =
+      Enum.group_by(ordered_icons, &function_name(&1), fn file ->
+        for path <- file |> File.read!() |> String.split("\n"),
+            path = String.trim(path),
+            String.starts_with?(path, "<path"),
+            do: path
+      end)
+
+    Mix.Generator.copy_template("assets/heroicons.exs", @target_file, %{icons: icons, vsn: vsn},
+      force: true
+    )
+
+    Mix.Task.run("format")
+  end
+
+  defp function_name(file) do
+    file |> Path.basename() |> Path.rootname() |> String.split("-") |> Enum.join("_")
+  end
+end