The public tag is `stellar-number`, and it is a display-only formatter rather than an input control.
`mode='decimal'` renders a localized plain number; `mode='scaled'` adds compact SI-style prefixes like `k`, `M`, and `G`.
`multiplier`, `prefix`, and `suffix` apply in both modes, so simple percent, money-like, and labeled metrics stay possible without extra formatter families.
`duration` animates from the previously rendered value to the next `value`; the first animated run starts from `0`, and `easing` defaults to Datastar's `outCirc`.
Keep it for simple cases. If you need more specialized Intl behavior, use Datastar `@intl` instead of growing this component surface.
`lang` on the host changes the formatter locale; otherwise the component falls back to the document language and then the browser locale.