input_slider does not throw an error when value is function

[youngroklee-ml]

When slider's value is set to be max function as below,

ui.input_slider("n", "N", min=0, max=100, value=max)

it does not throw an error but it create slider with initial value 0.

The followings also behave the same; they create slider with initial value 0 and do not throw errors.
ui.input_slider("n", "N", min=0, max=100, value="max")
ui.input_slider("n", "N", min=0, max=100, value=sum)
ui.input_slider("n", "N", min=0, max=100, value=min)

I think that more strict type checking for the value of input_slider() that throw error in above cases will help developers debug apps.

Below is a complete app to reproduce the example that I described above.

from shiny import Inputs, Outputs, Session, App, reactive, render, req, ui

app_ui = ui.page_fluid(
    ui.input_slider("n", "N", min=0, max=100, value=max),
    ui.output_text_verbatim("txt"),
)


def server(input: Inputs, output: Outputs, session: Session):
    @output
    @render.text
    def txt():
        return f"n*2 is {input.n() * 2}"


app = App(app_ui, server)