# React API reference

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All supported JavaScript exports are available from `form0-react` unless another path is shown.

## Rendering

- `FormRenderer` — render and manage a schema-driven form.
- `ThemeProvider`, `ThemeContext`, `useThemeClass` — provide or read the active theme class.

See [FormRenderer](/bindings/react/form-renderer) and
[Themes and styling](/bindings/react/themes-styling).

## Field registry

- `FieldRegistryProvider`, `FieldRegistryContext`, `useFieldRegistry`
- `createFieldRegistry`, `defaultFieldRegistry`
- `registerFieldComponent`, `unregisterFieldComponent`, `resetFieldComponents`
- `getFieldComponent`, `listRegisteredFieldTypes`, `getMissingFieldComponentTypes`
- `KNOWN_FIELD_TYPES`

See [Custom field renderers](/bindings/react/custom-renderers).

## Schema utilities

- `cloneDeep(value)` and `cloneSchema(schema)` create detached copies.
- `ensureSchemaKeys(elements)` adds stable keys where required and reports whether it changed the
  input.
- `prepareSchema(schema)` clones a schema and ensures element keys on the copy.

## Specialized integration

- `useBuildingPlanController(options)` coordinates the renderer’s building-plan section UI with
  repeatable data. It is specialized rather than a general form-state hook.

The internal `useFormEngine`, worker client, individual default renderer components, and
`FieldRenderer` are not package exports. Importing internal files is unsupported by the package
export map.

Theme tokens are exported separately from `form0-react/theme.css.js`. The compiled stylesheet is
available as `form0-react/index.css`.