How to use

first

function

in

Array

this.props.actions.getTimeAvailable(id).then(async (res) => {
   await this.setState({ availableTimes: res.payload.data.data, service_id: id, service_name: name})
   this.renderEvents(this.state.availableTimes.first)
  })

const roleMention = roleMentions.first();
const userMention = userMentions.first();
if (roleMentions.size > 0) {
 target = roleMention;