mutate.js

/* Before */
@withMutation(gql`mutation save ($title: String, $description: String) {
  saveData (title: $title, description: $description) {
    title
    description
  }
}`)
class Save extends React.Component {

  async save () {
    try {
      const result = await this.props.mutate({
        title: this.state.title,
        description: this.state.description
      })
      console.log('Success', result.data.saveData)
    } catch (error) {
      console.log('Error', error)
    }
  }

}

/* After */
@withMutation(gql`mutation save ($title: String, $description: String) {
  saveData (title: $title, description: $description) {
    title
    description
  }
}`)
class Save extends React.Component {

  async save () {
    try {
      const result = await this.props.save({
        title: this.state.title,
        description: this.state.description
      })
      console.log('Success', result.saveData)
    } catch (error) {
      console.log('Error', error)
    }
  }

}