javascript - Ramda 删除嵌套的空值

Question

我想从对象中删除所有空值。让我们假设:

const data = {
  key1: 'ok',
  key2: null,
  key3: '', // should be removed too
  key4: {
    inner_key1: 'aaa',
    inner_key2: null
  }
}

我做的是这个

const clean = R.reject(R.either(R.isNil, R.isEmpty))

而这项工作:

{"key1":"ok","key4":{"inner_key1":"aaa","inner_key2":null}}

除了 如您所见，对于嵌套对象，inner_key2 存在，应该被过滤掉。
使用 ramda，我怎样才能删除这个嵌套值呢？

Answer 1

创建一个递归函数，在清理对象后对属性进行迭代，并在每个属性上调用 clean，这是一个对象:

const { pipe, reject, either, isNil, isEmpty, map, when, is } = R

const clean = o => pipe(
  reject(either(isNil, isEmpty)),
  map(when(is(Object), clean))
)(o)

const data = {"key1":"ok","key2":null,"key3":"","key4":{"inner_key1":"aaa","inner_key2":null}}
const result = clean(data)

console.log(result)

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