patch js in a better way, fix event loop logic

client/patcher.py

@@ -0,0 +1,26 @@
+import re
+import sys
+import pathlib
+
+match_regex = r'/\* (.+?)\n(.+?)\n\*/\n(.*?)(\n\n|$)'
+
+fragments_dir = sys.argv[1]
+target_dir = sys.argv[2]
+fragments_path = pathlib.Path(fragments_dir)
+target_path = pathlib.Path(target_dir)
+target_text = target_path.read_text()
+
+for fragment_file in fragments_path.iterdir():
+  print(f"applying patch from {fragment_file.name}")
+  fragment_text = fragment_file.read_text()
+  matches = re.findall(match_regex, fragment_text, re.S)
+
+  for mode, patch_regex, patch_text, _ in matches:
+    if mode == "DELETE":
+      target_text = re.sub(patch_regex, "", target_text)
+    elif mode == "REPLACE":
+      target_text = re.sub(patch_regex, patch_text, target_text)
+    elif mode == "INSERT":
+      target_text = re.sub("("+patch_regex+")", r'\1'+patch_text, target_text)
+
+target_path.write_text(target_text)