zoro-cli/lib/plugins/config-web/template/src/util/dom/passive.js

https://github.com/vuejs/vue-cli

let passiveSupported

// Safely detecting option support
// https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
export function isPassiveSupported() {
  if (passiveSupported === undefined) {
    try {
      const options = {
        get passive() {
          // This function will be called when the browser
          //   attempts to access the passive property.
          passiveSupported = true
          return true
        },
      }

      // Note that handleEvent() is ignored on event listeners that aren't called.
      window.addEventListener('test', options, options)
      window.removeEventListener('test', options, options)
    } catch (err) {
      passiveSupported = false
    }
  }

  return passiveSupported
}

export function packAddEventListenerOptions(options) {
  isPassiveSupported()
  return passiveSupported ? { ...options } : false
}

export function packAddEventListenerOptionsNoPassive(options) {
  return packAddEventListenerOptions({
    ...options,
    passive: false,
  })
}