react runtime_error ai_generated true

错误：上下文提供程序缺少'value'属性。上下文将接收undefined。

Error: Context provider is missing a 'value' prop. The context will receive undefined.

ID: react/context-provider-missing-value

其他格式: JSON · Markdown 中文 · English
95%修复率
87%置信度
1证据数
2023-09-10首次发现

版本兼容性

版本状态引入弃用备注
React 16.3.0 active — — —
React 17.0.2 active — — —
React 18.2.0 active — — —

根因分析

React Context Provider组件在渲染时缺少'value'属性，导致消费组件接收undefined而不是预期的上下文值。

English

A React Context Provider component is rendered without a 'value' prop, causing consuming components to receive undefined instead of the intended context value.

generic

官方文档

https://react.dev/reference/react/createContext#provider

解决方案

  1. Ensure the Provider component always includes a 'value' prop, even if it's an empty object or a fallback.
  2. If the value is dynamically computed, use a state variable and pass it as the value prop.

无效尝试

常见但无效的做法:

  1. Adding a default value to createContext() to avoid undefined 70% 失败

    The default value is only used when there is no Provider at all; if a Provider is present without value, the default is ignored and undefined is passed.

  2. Wrapping the Provider in a conditional to skip rendering if no value is available 60% 失败

    This may hide the error but leads to missing context for consumers, causing runtime errors later.

  3. Setting value to null explicitly, thinking it's the same as missing 50% 失败

    null is a valid value and will be passed; the error is specifically about the prop being absent, not its value.