@kiwicom/smart-faq/src/shared/cuckoo/components/LogUnmount.js

Smart FAQ

// @flow strict
import * as React from 'react';

import { track } from '../tracker';
import type { CuckooAction, CuckooProps, Subcategory } from '../cuckooTypes';

type Props = {|
  subcategory: Subcategory,
  action: CuckooAction,
  props?: CuckooProps,
|};

// TODO ship this into nitrolib
export default class LogUnmount extends React.Component<Props> {
  openedAt: number;

  static defaultProps = {
    props: {},
  };

  componentDidMount() {
    this.openedAt = Date.now();
  }

  componentWillUnmount() {
    const { subcategory, action, props } = this.props;
    const timeOpen = Math.round((Date.now() - this.openedAt) / 1000);

    track(subcategory, action, { ...props, timeOpen });
  }

  render() {
    return null;
  }
}