Middlewares

Middlewares are functions that wrap the form’s reactive store and observe (or mutate) every action that flows through it. They run on every state change and can be composed.

Default middlewares

GolemUI ships a few middlewares you can opt into:

Middleware	What it does
loggerMiddleware	Logs each action and the resulting state to the console — handy during development.
jsonSchemaMiddleware	Validates each incoming change against a JSON Schema and rejects invalid mutations.
devToolsMiddleware	Pipes actions to the Redux DevTools extension for time-travel debugging.

Wiring middlewares

Pass an array of middlewares to <gui-form>. The framework adapter forwards the array to the underlying store.

import * as Core from '@golemui/core';

const middlewares = [Core.devToolsMiddleware()];

Then pass middlewares as a prop on your framework’s <FormComponent> / <gui-form>.

Want to write your own?

See Extending GolemUI / Middlewares for the middleware contract and a worked example.