nightwatch.js assertion for no browser logs

noErrorLogs.js

/**
 * Checks if the given element exists in the DOM.
 *
 * ```
 *    this.demoTest = function (client) {
 *      browser.assert.noErrorLogs()
 *    }
 * ```
 *
 * @method noErrorLogs
 * @param {boolean} [abortOnFailure] if it should continue or not if there is an error
 * @param {string} [message] Optional log message to display in the output. If missing, one is displayed by default.
 * @api assertions
 */
const _ = require('lodash')

exports.assertion = function (abortOnFailure, msg) {
  this.message = msg || 'Testing if browser had error logs'

  this.expected = 'no errors'

  this.abortOnFailure = abortOnFailure

  this.pass = function (value) {
    return _.isEmpty(value)
  }

  this.value = function (log_entries) {
    const errors = []
    log_entries.forEach((log) => {
      // if (log.level === '')
      console.log(log)
      errors.push(log.message)
    })
    return errors.join(' | ')
  }

  this.command = function (callback) {
    return this.api.getLog('browser', callback)
  }
}