How to use the is-mobile.isMobile function in is-mobile

import Api from '@/utils/api';
import {IStorage} from '@/types/types';
import loggerFactory from '@/utils/loggerFactory';
import sessionHolder from '@/utils/sessionHolder';
import {Logger} from 'lines-logger';
import {WS_API_URL} from '@/utils/consts';
import NotifierHandler from '@/utils/NotificationHandler';
import Vue from 'vue';
import Http from '@/utils/Http';
import WebRtcApi from '@/webrtc/WebRtcApi';
import {store} from '@/utils/storeHolder';

export const xhr: Http = /* window.fetch ? new Fetch(XHR_API_URL, sessionHolder) :*/ new Xhr(sessionHolder);
export const api: Api = new Api(xhr);
export const isMobile: boolean = mobile.isMobile();
export const messageBus = new Vue();
export const browserVersion: string = (function () {
  let ua = navigator.userAgent, tem,
      M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
  if (/trident/i.test(M[1])) {
    tem = /\brv[ :]+(\d+)/g.exec(ua) || [];

    return 'IE ' + (tem[1] || '');
  }
  if (M[1] === 'Chrome') {
    tem = ua.match(/\b(OPR|Edge)\/(\d+)/);
    if (tem != undefined) { return tem.slice(1).join(' ').replace('OPR', 'Opera'); }
  }
  M = M[2] ? [M[1], M[2]] : [navigator.appName, navigator.appVersion, '-?'];
  if ((tem = ua.match(/version\/(\d+)/i)) != undefined) { M.splice(1, 1, tem[1]); }

private playVideo(media: Media) {
    if (!this.videoElement) {
      console.warn('playVideo called before videoElement initialised');
      return;
    }

    if (this.initialised) {
      return;
    } else {
      this.initialised = true;
    }

    const autoPlay = !isMobile() && this.config && this.config.user.autoplayEnabled;
    const lowQualityOnSeek =
      this.config &&
      (isMobile()
        ? this.config.user.lowQualityOnLoadEnabledForMobile
        : this.config.user.lowQualityOnLoadEnabled);
    console.debug('playing video', media.hash, lowQualityOnSeek, autoPlay);

    this.hls = new Hls({
      autoStartLoad: false,
      capLevelToPlayerSize: true,
      maxSeekHole: 5,
      maxBufferHole: 5,
      maxBufferLength: 20,
      startLevel: lowQualityOnSeek ? 0 : -1,
    });

    this.syncVolume();

    this.hls.on(Hls.Events.MANIFEST_PARSED, (event, data) => {

private playVideo(media: Media) {
    if (!this.videoElement) {
      console.warn('playVideo called before videoElement initialised');
      return;
    }

    if (this.initialised) {
      return;
    } else {
      this.initialised = true;
    }

    const autoPlay = !isMobile() && this.config && this.config.user.autoplayEnabled;
    const lowQualityOnSeek =
      this.config &&
      (isMobile()
        ? this.config.user.lowQualityOnLoadEnabledForMobile
        : this.config.user.lowQualityOnLoadEnabled);
    console.debug('playing video', media.hash, lowQualityOnSeek, autoPlay);

    this.hls = new Hls({
      autoStartLoad: false,
      capLevelToPlayerSize: true,
      maxSeekHole: 5,
      maxBufferHole: 5,
      maxBufferLength: 20,
      startLevel: lowQualityOnSeek ? 0 : -1,
    });

const start = ascending ? min : max;
  const end = ascending ? max + 1 : min - 1;

  return range(start, end).map(year => {
    const yearStr = String(year);

    return (
      <option value="{yearStr}">
        {yearStr}
      </option>
    );
  });
};

const currYear = new Date().getFullYear();
const renderNativeInput = isMobile({ tablet: true });

const customValueToString = ({ month, year }: MonthPickerValue) =&gt;
  month &amp;&amp; year ? `${year}-${month &lt; 10 ? '0' : ''}${month}` : undefined;

const stringToCustomValue = (value: string) =&gt; {
  const [year, month] = value.split('-');

  return {
    month: parseInt(month, 10),
    year: parseInt(year, 10),
  };
};

const makeChangeHandler = &lt;
  Element extends HTMLSelectElement | HTMLInputElement
&gt;(

navbarLinkClickHandler() {
    if (isMobile()) {
      this.setState({ navbarOpened: false })
    }
  }

public updatePlayerActivity(move = false) {
    if (move && isMobile()) {
      return;
    }
    if (this.videoPlayerState.active) {
      this.videoPlayerState.active.unsubscribe();
      this.videoPlayerState.active = undefined;
    }
    this.videoPlayerState.active = timer(PLAYER_CONTROLS_TIMEOUT).subscribe(() => {
      if (this.videoPlayerState.active) {
        this.videoPlayerState.active.unsubscribe();
        this.videoPlayerState.active = undefined;
      }
    });
  }