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hasValidKey() — react Function Reference

Architecture documentation for the hasValidKey() function in ReactJSXElement.js from the react codebase.

Function javascript BabelCompiler Validation called by 4

Entity Profile

Dependency Diagram

graph TD
  04bd1671_ef17_1a3e_4550_297a31a727d2["hasValidKey()"]
  1bf5591f_27a1_c79f_853a_6242549e0e07["ReactJSXElement.js"]
  04bd1671_ef17_1a3e_4550_297a31a727d2 -->|defined in| 1bf5591f_27a1_c79f_853a_6242549e0e07
  541966e9_c9c6_423b_909d_7502d44146b3["jsxProd()"]
  541966e9_c9c6_423b_909d_7502d44146b3 -->|calls| 04bd1671_ef17_1a3e_4550_297a31a727d2
  ad281e06_8a7d_3988_f68c_33f816bae40c["jsxDEVImpl()"]
  ad281e06_8a7d_3988_f68c_33f816bae40c -->|calls| 04bd1671_ef17_1a3e_4550_297a31a727d2
  12bdbda4_5438_2837_0178_e722d4b02c99["createElement()"]
  12bdbda4_5438_2837_0178_e722d4b02c99 -->|calls| 04bd1671_ef17_1a3e_4550_297a31a727d2
  e25f8b64_9c1b_41a7_d00a_3663a86ab332["cloneElement()"]
  e25f8b64_9c1b_41a7_d00a_3663a86ab332 -->|calls| 04bd1671_ef17_1a3e_4550_297a31a727d2
  style 04bd1671_ef17_1a3e_4550_297a31a727d2 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react/src/jsx/ReactJSXElement.js lines 109–119

function hasValidKey(config) {
  if (__DEV__) {
    if (hasOwnProperty.call(config, 'key')) {
      const getter = Object.getOwnPropertyDescriptor(config, 'key').get;
      if (getter && getter.isReactWarning) {
        return false;
      }
    }
  }
  return config.key !== undefined;
}

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Frequently Asked Questions

What does hasValidKey() do?
hasValidKey() is a function in the react codebase, defined in packages/react/src/jsx/ReactJSXElement.js.
Where is hasValidKey() defined?
hasValidKey() is defined in packages/react/src/jsx/ReactJSXElement.js at line 109.
What calls hasValidKey()?
hasValidKey() is called by 4 function(s): cloneElement, createElement, jsxDEVImpl, jsxProd.

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