React useState cannot read properties of null (“reading useState”) while consume the component in VueJS

React useState cannot read properties of null (“reading useState”) while consuming the component in VueJS

When working with React components in a VueJS project, you may encounter an error message similar to “React useState cannot read properties of null” or “reading useState”. This error occurs when you try to use React’s useState hook inside a VueJS component.

The reason for this error is that React’s useState hook is designed to work specifically with React components, and it relies on React’s internal state management system. When you try to use it in a VueJS component, React is unable to find the necessary context and throws an error.

Fortunately, there are a few solutions to this problem:

Solution 1: Convert React component to a VueJS component

If you’re using React components in a VueJS project, it’s recommended to convert those components to VueJS components. This will ensure that the state management systems of both frameworks work seamlessly together.

To convert a React component to a VueJS component, you’ll need to rewrite the component using VueJS syntax and replace the useState hook with VueJS’s own state management system, such as the data property or the reactive function.

Here’s an example of how you can convert a React component that uses useState to a VueJS component:

  // React component
  import React, { useState } from 'react';
  
  const MyComponent = () => {
    const [count, setCount] = useState(0);
    
    return (
      

        Count: {count}
         setCount(count + 1)}>Increment
      
    );
  };
  
  // VueJS component
  export default {
    data() {
      return {
        count: 0
      };
    },
    
    methods: {
      increment() {
        this.count++;
      }
    },
    
    template: `
      

        Count: {{ count }}
        Increment
      
    `
  };
  

By converting the React component to a VueJS component, you can avoid the “React useState cannot read properties of null” error.

Solution 2: Use a wrapper component

If converting the React component to a VueJS component is not feasible, you can create a wrapper component in VueJS that acts as a bridge between the React component and the VueJS project.

The wrapper component will be responsible for rendering the React component and passing any necessary props or state values to it. This way, the React component can continue to use the useState hook without any issues.

Here’s an example of how you can create a wrapper component in VueJS:

  // Wrapper component
  import React, { useState } from 'react';
  
  const WrapperComponent = () => {
    const [count, setCount] = useState(0);
    
    return (
      

        
      
    );
  };
  
  // React component
  const MyReactComponent = ({ count, setCount }) => {
    return (
      

        Count: {count}
         setCount(count + 1)}>Increment
      
    );
  };
  
  export default WrapperComponent;
  

By using a wrapper component, you can ensure that the React component can still use the useState hook while being consumed in a VueJS project.

Solution 3: Separate the React component from the VueJS project

If neither of the above solutions is suitable for your project, you can consider separating the React component from the VueJS project entirely. This means maintaining two separate projects for React and VueJS, and communicating between them using APIs or other methods.

While this solution may require more effort and maintenance, it allows you to keep the React component intact without any modifications.

Ultimately, the solution you choose will depend on the specific requirements of your project and the feasibility of each approach.

Remember to always consider the compatibility and integration between different frameworks when working on a mixed technology stack project.

I hope this article helped you understand how to resolve the “React useState cannot read properties of null” error while consuming a React component in a VueJS project. If you have any further questions, feel free to leave a comment below.