Make round function output the requested number of decimals

[helmo]

Thanks for the great card!

I was triggert by a monetary value being rounded to a single decimal while I configured 2.

I'm not a TypeScript expert, nor did I test this in all possible variations, so handle with care 😉
But this patch seems to do the trick.

[flixlix]

hey @helmo, to me this seems like expected behaviour, no?
I think it's more readable to only show meaningful decimals, which a 0 at the end is not...
I do understand the frustration in the case of currency, since you are expecting the number of cents. maybe we can implement some logic only for currency entities...?

[rhaschke]

You can use a custom template to format as you like, e.g.:

    secondary_info:
      template: {{ states('sensor.tibber_pulse_strompreis') | float(0) * 100 | round(1) }} ct