next.js/test/integration/basic/pages/nav/as-path-using-router.js

import React from 'react'
import Router from 'next/router'

export default class extends React.Component {
  constructor (...args) {
    super(...args)
    this.state = {}
  }

  componentDidMount () {
    const asPath = Router.asPath
    this.setState({ asPath })
  }

  render () {
    return (
      <div className='as-path-content'>
        {this.state.asPath}
      </div>
    )
  }
}