A simple hacky reporter I wrote for mocha & Detox that excludes 'excessive' technical information. Place it in the root directory and add --reporter simple-reporter to mocha.opts

simple-reporter.js

// simple-reporter.js
var mocha = require('mocha')
module.exports = SimpleReporter

const trimregex = /[\s\S]+?(?=Hierarchy)/ // or /[\s\S]+?(?=Error Trace)/ or /[\s\S]+?(?=Exception)/ etc

function SimpleReporter (runner) {
  mocha.reporters.Base.call(this, runner)
  var passes = 0
  var failures = 0

  runner.on('pass', function (test) {
    passes++
    console.log('pass: %s', test.fullTitle())
  })

  runner.on('fail', function (test, err) {
    failures++
    let trimmedErr = trimregex.exec(err.message)
    console.log('fail: %s -- error: %s', test.fullTitle(), trimmedErr)
  })

  runner.on('end', function () {
    console.log('end: %d/%d', passes, passes + failures)
  })
}

// To have this reporter "extend" a built-in reporter uncomment the following line:
// mocha.utils.inherits(SimpleReporter, mocha.reporters.Spec);

In case anyone needs it, here's a jest reporter that we used