RadioButton

This component is basically just a wrapper for <input type="radio" />. You'll probably want to use it along with a <label>. You also might prefer to use RFUI's FormField component to wrap it.
Radio buttons are appropriate when you are allowing the user to choose between a few options. If there are many options to choose from, prefer the Select component.
Source code
import { RadioButton } from "rfui-package";

#Basic

<RadioButton />

#Controlled

See Controlled & Uncontrolled Components. Passing checked and onClick work because of ...rest.
<RadioButton checked={checked} onClick={onClick} />

#Size

Set size to either "sm", "md" or "lg". Defaults to "md".
<Stack className="gap-5">
  <RadioButton size="sm" />
  <RadioButton size="md" />
  <RadioButton size="lg" />
</Stack>

#Disabled

Set disabled to either true or false. Defaults to false.
<RadioButton disabled />

#Invalid

Set invalid to either true or false. Defaults to false.
<RadioButton invalid />

#Props

PropRequiredDefaultType and notes
size-"md"
"sm" | "md" | "lg"
invalid-"md"
"sm" | "md" | "lg"
...rest--
Omit<ComponentProps<"input">, "size">
See the docs for rest parameters. For RadioButton, you could pass anything you normally would pass to <input type="radio"> because the return value looks something like this:
<input
  type="radio"
  className={className}
  {...restWithoutClass}
/>