Function ponents do not support contextType.

I encountered an issue when trying to add context to a React ponent that was wrapped with a React Router withRouter(...) function.

import React, { Component } from 'react'
import UserContext from './UserContext'
class Toolbar extends Component {
  render(){
    return (
      <div>username: this.context.username</div>
    )
  }
}
Toolbar.contextType = UserContext
export default withRouter(Toolbar)

Function ponents do not support contextType.

I encountered an issue when trying to add context to a React ponent that was wrapped with a React Router withRouter(...) function.

import React, { Component } from 'react'
import UserContext from './UserContext'
class Toolbar extends Component {
  render(){
    return (
      <div>username: this.context.username</div>
    )
  }
}
Toolbar.contextType = UserContext
export default withRouter(Toolbar)

• javascript
• reactjs
• react-router
• react-router-dom

1 Answer 1

The solution to this issue is simply switch the last two lines like so:

export default withRouter(Toolbar)
Toolbar.contextType = UserContext