The form-field namespace a module Template is written in. <Field> itself is a section wrapper with a label row; every member is one labelled control. The members differ mainly in the shape of value.

Controlled inputs without the label row, for a search box, a filter bar or an inline cell editor. Each member is its own override slot: Input, InputTextArea, InputPassword, InputEmail, InputNumber and InputCheckbox can be re-skinned separately.

A controlled dropdown for plain values, { label, value } pairs or an enumOf(...) class, with single, multiple and searchable modes. The option list portals to document.body at the field's width, so a scrolling modal or a table never clips it.

A boolean drawn as <button role="switch">, so focus and Space/Enter toggling come from the browser. Pass checked to control it, or defaultChecked to let it keep its own state. For a model field with a label row, use Field.Switch.

One choice from a role="radiogroup" of role="radio" buttons; arrow keys move the focus and the choice together. Each child carries its own value, and the group matches on it. A numeric value counts as an index only when no child owns it.

A choice as a row of pressed buttons instead of a dropdown, for a few short options. ToggleSelect picks one and ToggleSelect.Multi picks many. nullable and validate are required: a button row has no empty state to fall back on, so the call site decides both.

A date on the browser's own <input type="date">, so the calendar, locale and touch keyboard are the platform's. The browser enforces min and max. A native field cannot grey out single days, so a pick that disabledDate rejects is refused with a warning toast.

The one button primitive. A synchronous onClick renders a plain button; returning a promise puts the same button through loading, success or error, and blocks repeat clicks meanwhile. There is no separate async button to choose.