为什么 Flow/Nuclide 在我的 React-Native 组件中向我显示警告 "not covered by Flow"？

Question

我开始使用流并有一个简单的组件:

// @flow
import React, { Component } from 'react';
import {
  Text,
  ScrollView
} from 'react-native';

const Conversations = (props: { messages: string }) => (
  <ScrollView>
    <Text>{props.messages}</Text>
  </ScrollView>
);

export default Conversations;

在 Nuclide 中，我看到了这个警告 "Warning, type coverage, not covered by Flow"。它指向第 9 行，我在这里使用 <ScrollView>.

这是为什么/这是什么意思/我该如何解决？

Answer 1

您已开启类型覆盖功能（见截图）。您可以单击状态栏中的百分比来打开和关闭它。它让您知道 Flow 有哪些表达式的类型，哪些没有类型（这意味着您可以对它们做任何事情并且 Flow 不会警告您）。

Answer 2

React Native 团队还没有将 Flowtype 添加到核心组件中。

来自官方的 React Native 路线图：

Flowtyping the core components. Owners: yungsters, alex_frantic. ETA: January

Making the most common components come with Flow types, for a better typechecking experience. This should also make it easier to reduce breaking changes. Flow already comes with React Native, so this is a logical step to further improve the experience.

https://github.com/facebook/react-native/wiki/Roadmap/ebdbdc699bc083b98ac7b067465218fd70d30b66

为什么 Flow/Nuclide 在我的 React-Native 组件中向我显示警告 "not covered by Flow"？

Why is Flow/Nuclide showing me a warning "not covered by Flow" in my React-Native component?

react-native

flowtype

nuclide-editor