MESOP_STATIC_FILES_BASE_PATH

docs/api/config.md

@@ -202,6 +202,10 @@ By default, this is not enabled. You can enable this by setting it to `true`.
 
 This uses WebSockets instead of HTTP Server-Sent Events (SSE) as the transport protocol for UI updates. If you set this environment variable to `true`, then [`MESOP_CONCURRENT_UPDATES_ENABLED`](#MESOP_CONCURRENT_UPDATES_ENABLED) will automatically be enabled as well.
 
+### MESOP_STATIC_FILES_BASE_PATH
+
+This is the base path for serving static files. This is rarely needed because the default of using os.getcwd() is usually sufficient.
+
 ## Usage Examples
 
 ### One-liner

mesop/env/env.py

@@ -4,6 +4,10 @@
   "MESOP_AI_SERVICE_BASE_URL", "http://localhost:43234"
 )
 
+MESOP_STATIC_FILES_BASE_PATH = os.environ.get(
+  "MESOP_STATIC_FILES_BASE_PATH", ""
+)
+
 MESOP_WEBSOCKETS_ENABLED = (
   os.environ.get("MESOP_WEBSOCKETS_ENABLED", "false").lower() == "true"
 )

mesop/labs/web_component.py

@@ -3,6 +3,7 @@
 from functools import wraps
 from typing import Any, Callable, TypeVar, cast
 
+from mesop.env.env import MESOP_STATIC_FILES_BASE_PATH
 from mesop.runtime import runtime
 from mesop.utils.validate import validate
 
@@ -52,6 +53,8 @@ def format_filename(filename: str) -> str:
   if ".runfiles" in filename:
     # Handle Bazel case
     return filename.split(".runfiles", 1)[1]
+  elif MESOP_STATIC_FILES_BASE_PATH:
+    return os.path.relpath(filename, MESOP_STATIC_FILES_BASE_PATH)
   else:
     # Handle pip CLI case
     return os.path.relpath(filename, os.getcwd())

mesop/server/static_file_serving.py

@@ -12,6 +12,7 @@
 from flask import Flask, Response, g, make_response, request, send_file
 from werkzeug.security import safe_join
 
+from mesop.env.env import MESOP_STATIC_FILES_BASE_PATH
 from mesop.exceptions import MesopException
 from mesop.runtime import runtime
 from mesop.server.constants import WEB_COMPONENTS_PATH_SEGMENT
@@ -99,6 +100,9 @@ def serve_web_components(path: str):
       else safe_join(os.getcwd(), path)
     )
 
+    if MESOP_STATIC_FILES_BASE_PATH:
+      serving_path = safe_join(MESOP_STATIC_FILES_BASE_PATH, path)
+
     file_name = os.path.basename(path)
     file_extension = os.path.splitext(file_name)[1].lower()
     allowed_extensions = {".js", ".css"}

mesop/version.py

@@ -1,6 +1,6 @@
 """Contains the version string."""
 
-VERSION = "0.12.7"
+VERSION = "0.12.8beta1"
 
 if __name__ == "__main__":
   print(VERSION)