Interactor in node.js

interactor.js

import co from 'co'

export default (...funcs) => {
  return (context = {}) => {
    return co(function*() {

      // set up our result context
      let result = {
        ...context,
        fail(msg = 'Failed') {
          const err = typeof(msg) == 'string' ? Error(msg) : msg
          throw err
        }
      }

      try {
        // loop through each interactor
        // and yield its result
        for (const func of funcs) {
          result = yield func(result)
        }

      } catch(err) {
        result.success = false
        result.failure = true
        result.error = err
      }

      return result
    })
  }
}