Manage state inside storybook stories
Switch branches/tags
Nothing to show
Clone or download
Latest commit 0454d94 Dec 2, 2018

README.md

Storybook state

Getting Started

npm install --save @sambego/storybook-state

First you will need to create a new store, to save the state and handle updates. You can add all properties which your component expects, and the State component will propagate them to your component. Once you've created the store, you can wrap your components in a State component and pass along the store.

In the example below we create a modal which will expect an active property. When clicking on the button we will update the store, which in turn will update the property active on the modal;

Display and update using a State component

import React from "react";
import { storiesOf } from "@storybook/react";
import { State, Store } from "@sambego/storybook-state";

const store = new Store({
  active: false
});

storiesOf("Button", module).add("with text", () => (
  <div>
    <State store={store}>
      <Modal>Modal content</Modal>
    </State>
    <Button onClick={() => store.set({ active: !store.get("active") })} />
  </div>
));

Display and update using a State decorator

import React from "react";
import { storiesOf } from "@storybook/react";
import { StateDecorator, Store } from "@sambego/storybook-state";

const store = new Store({
  active: false
});

storiesOf("Button", module)
  .addDecorator(StateDecorator(store))
  .add("with text", () => [
    <Modal key="modal">Modal content</Modal>,
    <Button
      onClick={() => store.set({ active: !store.get("active") })}
      key="button"
    />
  ]);

Store

The store has a few methods you can use to get and update the state.

When creating a new instance, you can pass along the initial state.

const store = new Store({
  foo: "bar",
  active: true,
  items: ["item 1", "item 2"]
});

You can retrieve a state from the store by using the get() method.

store.get("foo"); // will return 'bar'
store.get("active"); // will return true
store.get("items"); // will return ['item 1', 'item 2']

You can update the store by using the set() method.

store.set({
  active: false,
  bar: "foo"
});

You can subscribe to changes in the store by using the subscribe() method. You can register a callback, which will have the updated state as the first parameter whenever the state updates.

store.subscribe(state => // Do something with the updated state.

State component

The state component accepts one property, an instance of Store. All properties that depend on the state, or should update on state changes, should be added in the Store, and will be propagated to your component by the <State /> component.

<State store={store}>
  <StateDependendComponent />
</State>

The state also allows a function as a child so you can pass the state to any prop of your components.

const store = new Store({
  active: true
});

<State store={store}>
  {state => [
    <ElementOne active={state.active} />,
    <ElementTwo checked={state.active} />
  ]}
</State>;

You can also manipulate the state before passing it to the children via the parseState property.

<State store={store} parseState={state => ({ ...state, id: `#${state.uuid}` })}>
  <StateDependendComponent />
</State>

When using the StateDecorator you can pass along the state parser function as the second argument.

storiesOf("Button", module)
    .addDecorator(StateDecorator(store, state => ({...state, id: `#${state.uuid}`}))
    .add(...)