Performance (+50%): Compile ComponentNode at creation, not render (#22)

Co-authored-by: rbeard0330 <@dul2k3BKW6m>

benchmarks/component_rendering.py

@@ -0,0 +1,42 @@
+from time import perf_counter
+
+from django.template import Context, Template
+
+from django_components import component
+
+from tests.django_test_setup import *  # NOQA
+from tests.testutils import Django111CompatibleSimpleTestCase as SimpleTestCase
+
+
+class SlottedComponent(component.Component):
+    def template(self, context):
+        return "slotted_template.html"
+
+
+class SimpleComponent(component.Component):
+    def context(self, variable, variable2="default"):
+        return {
+            "variable": variable,
+            "variable2": variable2,
+        }
+
+    def template(self, context):
+        return "simple_template.html"
+
+
+class RenderBenchmarks(SimpleTestCase):
+    def setUp(self):
+        component.registry.clear()
+        component.registry.register('test_component', SlottedComponent)
+        component.registry.register('inner_component', SimpleComponent)
+
+    def test_render_time(self):
+        template = Template("{% load component_tags %}{% component_block 'test_component' %}"
+                            "{% slot \"header\" %}{% component 'inner_component' variable='foo' %}{% endslot %}"
+                            "{% endcomponent_block %}", name='root')
+        start_time = perf_counter()
+        for _ in range(1000):
+            template.render(Context({}))
+        end_time = perf_counter()
+        total_elapsed = end_time - start_time  # NOQA
+        print(f'{total_elapsed } ms per template')