Starting this App with Flask is slow, it takes a few seconds to load

[Alan3344]

Here is the simple test code

• This phenomenon did not occur when I used Fastapi
• I don't know about other frameworks without testing

# index_flask.py

from reactpy import component, html


@component
def Index():
    return html.div(
        html.h1('Test Flask App'),
        html.h2('Hello World'),
    )

# main-flask.py

from index_flask import Index
from reactpy.backend.flask import configure, Flask

app = Flask(__name__)
app.config['debug'] = True
configure(app, Index)
print(app.url_map)

default at http://127.0.0.1:8000

# startup it
gunicorn main-flask:app --reload

• Running this for the first time will output

(.venv) ➜  recatpy_ gunicorn main-flask:app --reload
[2023-08-29 15:46:36 +0700] [81626] [INFO] Starting gunicorn 21.2.0
[2023-08-29 15:46:36 +0700] [81626] [INFO] Listening at: http://127.0.0.1:8000 (81626)
[2023-08-29 15:46:36 +0700] [81626] [INFO] Using worker: sync
[2023-08-29 15:46:36 +0700] [81627] [INFO] Booting worker with pid: 81627
Map([<Rule '/_reactpy/stream' (OPTIONS, HEAD, GET) -> reactpy_api_4392762960.without_path>,
 <Rule '/' (OPTIONS, HEAD, GET) -> reactpy_spa_4392762960.send_client_dir>,
 <Rule '/_reactpy/modules/<path>' (OPTIONS, HEAD, GET) -> reactpy_api_4392762960.send_modules_dir>,
 <Rule '/_reactpy/stream/<path>' (OPTIONS, HEAD, GET) -> reactpy_api_4392762960.with_path>,
 <Rule '/_reactpy/assets/<path>' (OPTIONS, HEAD, GET) -> reactpy_api_4392762960.send_assets_dir>,
 <Rule '/static/<filename>' (OPTIONS, HEAD, GET) -> static>,
 <Rule '/<_>' (OPTIONS, HEAD, GET) -> reactpy_spa_4392762960.send_client_dir>])

(.venv) ➜  recatpy_ pip list freeze
Package            Version
------------------ ---------
aiohttp            3.8.5
aiosignal          1.3.1
annotated-types    0.5.0
anyio              3.7.1
asgiref            3.7.2
async-timeout      4.0.3
attrs              23.1.0
blinker            1.6.2
certifi            2023.7.22
charset-normalizer 3.2.0
click              8.1.7
colorlog           6.7.0
fastapi            0.103.0
fastjsonschema     2.18.0
Flask              2.3.3
Flask-Cors         4.0.0
flask-sock         0.6.0
frozenlist         1.4.0
h11                0.14.0
httpcore           0.17.3
httptools          0.6.0
httpx              0.24.1
idna               3.4
itsdangerous       2.1.2
Jinja2             3.1.2
jsonpatch          1.33
jsonpointer        2.4
lxml               4.9.3
markdown-it-py     3.0.0
MarkupSafe         2.1.3
mdurl              0.1.2
multidict          6.0.4
mypy-extensions    1.0.0
pip                23.2.1
pydantic           2.3.0
pydantic_core      2.6.3
Pygments           2.16.1
python-dotenv      1.0.0
PyYAML             6.0.1
reactpy            1.0.2
reactpy-router     0.1.0
requests           2.31.0
rich               13.5.2
setuptools         68.1.2
simple-websocket   0.10.1
sniffio            1.3.0
starlette          0.27.0
typing_extensions  4.7.1
urllib3            2.0.4
uvicorn            0.23.2
uvloop             0.17.0
watchfiles         0.20.0
websockets         11.0.3
Werkzeug           2.3.7
wsproto            1.2.0
yarl               1.9.2

[Alan3344]

I recorded a video to verify this

2566-08-29.16.18.30.mov