Kit Reference

mlform and mlform/kit resolve to the same package entry. They export mountForm, unmountForm, createPrimitiveAdapter, defaultKitDesignSystem, and defaultKitLabels, along with their mounting, adapter, label, and design system types.

mountForm(container, options) requires a schema and transport. It creates a view, renders the selected layout with built-in Web Components, attaches the design system, and returns a handle with the runtime form and unmount().

The container must be empty unless containerStrategy: "replace" is set. Replacement restores the prior content on unmount for every layout. Reusing a container unmounts the previous MLForm instance after the new host and design system are ready. A setup failure leaves the previous instance mounted.

Kit forwards runtime options such as inactiveFieldPolicy, hooks, and listener error policy to the view. reportFetchMode, reportTransport, and user-facing labels also apply to explicit sections, tabs, and wizard layouts. See the view reference for custom rendering, layouts, and extension definitions.

reportPane: "hidden" hides report nodes in explicit layouts. A parent window may mount into a same-origin iframe after MLForm’s components are registered in the iframe document.

Use createPrimitiveAdapter with createFormView when the application owns the layout and mounts individual built-in controls in stable slots.