BasicHelper.js

//Assertions
  async isElementVisible(css, timeout = 50) {
    let visibility = true
    await page
      .waitForSelector(css, { visible: true, timeout: timeout })
      .catch(() => {
        visibility = false;
      })
    return visibility
  },

  async isElementDisplayedByClass(css, timeout = 50) {
    let visibility = true
    await page
      .waitForSelector(css + '.displayNone', { timeout: timeout })
      .catch(() => {
        visibility = false;
      })
    return visibility
  },

  async isElementVisibleByWidth(css, timeout = 2000) {
    let visible = true
    await page.waitFor(css =>
      [...(document.querySelectorAll(css))]
        .filter(el => el.offsetHeight !== 0)
        .length !== 0
      , { timeout: timeout }, css)
      .catch(() => {
        visible = false
      })
    return visible
  },

  async isElementPresent(selector, timeout = 2000) {
    let isPresent = true
    await page.waitForSelector(selector, { timeout: timeout })
      .catch(() =>
        isPresent = false
      )
    console.log(`element is present - ${isPresent}`)
    return isPresent
  },