idify-react-component

Idify React Component

This library provides a utility to create class components from functional components or existing class components, with additional ref management capabilities. This allows you to access and manipulate component instances using IDs.

Installation

npm install idify-react-component

Usage

Creating a Component from a Functional Component

1. First create your component:

// File: ./MyComponent.tsx
import React, { useImperativeHandle, type ForwardedRef } from 'react';
import { CreateFromFC } from 'idify-react-component';

type PropsType = {};
type RefType = { click: () => void };

function MyComponentFC(props: PropsType, ref: ForwardedRef<RefType>) {
  const onClick = () => {
    // Do something
  };

  // ref object you will get access to later
  useImperativeHandle(ref, () => ({ click: onClick }));

  return <div></div>;
}

const MyComponent = CreateFromFC(MyComponentFC);
export default MyComponent;

1. Then use it:

// File: ./App.tsx
import React from 'react';
import MyComponent from './src/MyComponent';

function App() {
  const onClick = () => {
    MyComponent.$componentId?.click();
  };

  return <MyComponent id='componentId' />;
}

Notes

• You can retrieve all mounted components from the refs map, where each entry has a key as the component's ID and the value as the reference. Use MyComponent.refs to access this map

• Regardless of where the component is rendered, you can obtain a reference to it from anywhere as long as the component is mounted.

• If you don't pass an id prop, a reference will not be registered in the refs map.

• Several additional methods will automatically be added to the component reference object: mount, unMount, forceRerender, and getParentName.

• You can optionally restrict the IDs that can be used and get additional TypeScript types by passing the option ids:

const IDS = ['componentId', 'componentId2'] as const;

// OR

const IDS = {
  forHomePage: 'componentId',
  forDetailPage: 'componentId2',
} as const;

// OR

enum IDS {
  forHomePage = 'componentId',
  forDetailPage = 'componentId2',
}

const MyComponent = CreateFromFC(MyComponentFC, { ids: IDS });

• Change the the default id prefix $ into something else:

const MyComponent = CreateFromFC(MyComponentFC, { prefix: '' });
MyComponent.$componentId; // default prefix
MyComponent.componentId; // without prefix

• Change the id prop name to something else:

const MyComponent = CreateFromFC(MyComponentFC, { idPropName: 'refId' });

<MyComponent refId='componentId' />;

• If you only need TypeScript type checking per component, you can use the setIdType method. This method doesn't change any functionality but adds types to the component:

import MyComponent from './src/MyComponent';

const MyComponentTyped = MyComponent.setIdType<'componentId' | 'componentId2'>();

• To create from a class component, you can use CreateFromRC:

import ClassComponent from 'some-ui-library';
import { CreateFromRC } from 'idify-react-component';

const MyComponent = CreateFromRC(ClassComponent);

[!WARNING] Components with generic types cannot be inferred by TypeScript correctly. To resolve this, add id to the props type.

type IDs = 'componentId' | 'componentId2'; // or just a string type

// 👇 Add the id type to your props
type PropsType<T> = { id?: IDs; myProp: T };

type RefType = { click: () => void };

function MyComponentFC<T>(props: PropsType<T>, ref: ForwardedRef<RefType>) {
  const onClick = () => {
    // Perform some action
  };

  // ref object you will get access to later
  useImperativeHandle(ref, () => ({ click: onClick }));

  return <div></div>;
}

const MyComponent = CreateFromFC(MyComponentFC);

export default MyComponent;

API

CreateFromFC

Parameters

• functionComponent (ForwardRefRenderFunction): A React functional component.
• options

option	type
ids	ids?: readonly string[] | { [K: PropertyKey]: string }
prefix	prefix?: string
idPropName	idPropName?: string

Returns

A class component with the following additional properties:

• refs (Map): A map of component IDs to their ref objects.
• setIdType (function): Sets the ID type for TypeScript autocomplete.

CreateFromRC

Parameters

• ReactClassComponent (ComponentClass): A React class component.
• options

option	type
ids	ids?: readonly string[] | { [K: PropertyKey]: string }
prefix	prefix?: string
idPropName	idPropName?: string

Returns

A class component with the same additional properties as CreateFromFC.

License

This library is licensed under the MIT License. See the LICENSE file for more information.