react-singleton-component

Installation

npm i react-singleton-component

Usage

import { createSingletonComponent } from "react-singleton-component";

const SelfIntroduction = createSingletonComponent(
    { name: "John Smith", age: 35 },
    props => <p style={{color: props.color}}>{props.name} ({props.age})</p>
);
ReactDOM.render(<SelfIntroduction color="blue" />, document.getElementById("container"));
SelfIntroduction.setState({ age: SelfIntroduction.state.age + 1 });

createSingletonComponent returns a React.Component constructor with static method setState and static property state. The first argument is used as the default state of the returned component, and passed as the props of the component specified in the second argument.

TypeScript

createSingletonComponent has two generics parameters of props and state. They will be combined to one object and passed as props.

type Props = { color: string };
type State = { name: string, age: number };
const SelfIntroduction = createSingletonComponent<Props, State>(
    { name: "John Smith", age: 35 },
    props => <p style={{color: props.color}}>{props.name} ({props.age})</p>
);
ReactDOM.render(<SelfIntroduction color="blue" />, document.getElementById("container"));
SelfIntroduction.setState({ age: SelfIntroduction.state.age + 1 });

If you do not need props, TypeScript language server will automatically infer the type of state!