function isClassStyleType (type) {
  if (Array.isArray(type) === false) { return false }
  if (type.length !== 3) { return false }

  let hits = 0

  ;[ 'String', 'Array', 'Object' ].forEach(entry => {
    if (type.includes(entry) === true) {
      hits++
    }
  })

  return hits === 3
}
Also update /ui/testing/specs/specs.utils.js on the "typeMap" object