React JavaScript to TypeScript Transform

Transforms React code written in JavaScript to TypeScript. This is based on popular library react-javascript-to-typescript-transform with a few feature customized.

基于棒棒的类库react-javascript-to-typescript-transform，增加/修改了少许功能, 详见示例

Features:

• Proxies PropTypes to React.Component generic type and removes PropTypes
• Provides state typing for React.Component based on initial state， setState() calls and this.state in the component
• Hoist large interfaces for props and state out of React.Component<P, S> into declared types
• Convert functional components with PropTypes property to TypeScript and uses propTypes to generate function type declaration

Example

input

class MyComponent extends React.Component {
    static propTypes = {
        alice: PropTypes.string.isRequired,
        ate: PropTypes.number,
    };
    constructor(props) {
        super(props);
        this.ref = React.createRef();
        this.state = { allen: '' };
    }

    onClick() {
        this.setState({ drink: 3 });
    }

    render() {
        const { cake } = this.props;
        const { milk } = this.state;
        return <div ref={this.ref}>HOME</div>;
    }
}

output

interface IMyComponentProps extends React.HTMLAttributes<Element> {
    alice: string;
    ate?: number;
    cake?: any;
}
type MyComponentState = {
    allen?: string;
    drink?: number;
    milk?: any;
};
class MyComponent extends React.Component<IMyComponentProps, MyComponentState> {
    ref: any;
    constructor(props) {
        super(props);
        this.ref = React.createRef();
        this.state = { allen: '' };
    }
    onClick() {
        this.setState({ drink: 3 });
    }
    render() {
        const { cake } = this.props;
        const { milk } = this.state;
        return <div ref={this.ref}>HOME</div>;
    }
}

Usage

CLI

npm install -g react-proptypes-to-typescript

react-proptypes-to-typescript "./src/**/*.js"

or

react-proptypes-to-typescript "./src/**/*.js" --remove-original-files

Development

Tests

Tests are organized in test folder. For each transform there is a folder that contains folders for each test case. Each test case has input.tsx and output.tsx.

npm test