find key pathes contains keyword in value

inspect.js

function inspect(obj, keyword, curr) {
  if(!obj) return []
  const keys = Object.keys(obj)
  let ret = []

  for(let i=0; i<keys.length; i++) {
    const value = obj[keys[i]]

    if(typeof value == 'object') {
      ret = [].concat.apply(ret, 
        inspect(value, keyword, Array.isArray(obj)
          ? curr + '[' + keys[i] + ']'
          : curr + '.' + keys[i]))
    } else {
      if(typeof value == 'string' && value.indexOf(keyword) > -1)
        ret.push(curr + '.' + keys[i])
    }
  }

  return ret
}


inspect(require('./response.json'), 'Error', '')