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interface IProps {
    firstName: string,
    lastName: string,
    age?: number;
    gender?: string,
}

// 泛型
class Human<T> {
    constructor(props) {
        // props
    }
}

// 类型“Human”不是泛型类型
class Person extends Human<IProps> {
    // [x: string]: any;
    firstName: any;
    lastName: any;
    constructor(props) {
        super(props);
        const {
            firstName,
            lastName,
        } = props;
        this.firstName = firstName;
        this.lastName = lastName;
    }
}