src/getConfig.js
function isSimple(config) {
  return (
    isObject(config) &&
    !config.hasOwnProperty('linters') &&
    intersection(Object.keys(defaultConfig), Object.keys(config)).length === 0
  )
}
function isSimple(config) {
  return (
    isObject(config) &&
    !config.hasOwnProperty('linters') &&
    intersection(Object.keys(defaultConfig), Object.keys(config)).length === 0
  )
}
function isSimple ( config ) { return ( isObject ( config ) && ! config . hasOwnProperty ( 'linters' ) && intersection ( Object . keys ( defaultConfig ) , Object . keys ( config ) ) . length === 0 ) }
Check if the config is "simple" i.e. doesn't contains any of full config keys

@param config
@returns {boolean}
Check if the config is simple i . e . doesn t contains any of full config keys