ES6 Classes & Constructors

What common JavaScript library or framework pattern does this class resemble?

class Component {
  constructor(props) {
    this.props = props;
    this.state = {};
  }
  
  setState(newState) {
    this.state = {...this.state, ...newState};
    this.render();
  }
  
  render() {
    throw new Error('You must implement render()'); 
  }
}

Express middleware
jQuery plugin
React component
This class structure resembles a React component: 1) It has props passed at initialization, 2) It maintains internal state, 3) It has a setState method to update state immutably, 4) It requires a render method to be implemented, 5) Updates to state trigger re-rendering, 6) This pattern was common in React's class-based components before hooks were introduced, showing how ES6 classes were leveraged in major frameworks.
Node.js module

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