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Effector React Slots

A slot is a place in a component where you can insert any unknown component. It's a well-known abstraction used by frameworks such as Vue.js and Svelte.

Slots arn't present in the React. With React you can achieve this goal using props or React.Context. In large projects this is not convenient, because it generates "props hell" or smears the logic.

Using React with Effector we can achieve slot goals without the problems described above.

Try it out

Usage

Step 1

npm install --save-dev @space307/publish-wizard

# or

yarn add @space307/publish-wizard --dev

Step 2

Define constant with slots name and call createSlotFactory.

import { createSlotFactory } from '@space307/effector-react-slots';

export const SLOTS = {
  FOO: 'foo',
  BAR: 'bar',
};

export const { api, createSlot } = createSlotFactory({ slots: SLOTS });

Step 3

Create Slot component.

import React from 'react';
import { useStoreMap } from 'effector-react';

import { createSlot, SLOTS } from './slots';

const { $slot } = createSlot({ id: SLOTS.FOO });

export const FooSlot = () => {
  const Component = useStoreMap({
    store: $slot,
    fn: ({ component }) => component,
    keys: [],
  });

  return <Component />;
};

Step 4

Insert Slot component to your UI.

import React from 'react';

import { FooSlot } from './fooSlot';

export const ComponentWithSlot = () => (
  <>
    <h1>Hello, Slots!</h1>
    <FooSlot />
  </>
);

Step 5

Render something inside slot. For example, based on data from feature toogle of your app.

import { split } from 'effector';

import { $featureToggle } from './featureToggle';
import { api, SLOT } from './slots';

const MyAwesomeFeature = () => <p>Look at my horse!</p>;
const VeryAwesomeFeature = () => <p>My horse is amaizing!</p>;

split({
  source: $featureToggle,
  match: {
    awesome: (data) => msg.type === 'awesome',
    veryAwesome: (data) => msg.type === 'veryAwesome',
  },
  cases: {
    awesome: api.set.prepend(() => ({ id: SLOT.FOO, Component: MyAwesomeFeature })),
    veryAwesome: api.set.prepend(() => ({ id: SLOT.FOO, Component: VeryAwesomeFeature })),
  },
});

Try it out

TypeScript guide

Best practices for writing well-typed code.

createSlot

Props of component passed to slot can be defined as generic

const slot = createSlot<{ readonly text: string }>({ id: 'heading' });

API

createSlotFactory

Function that returns a function for creating slots and an API for working with slots.

API

createSlot

Function, takes the slot name. Returns the table containing the slot

set

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