readContext() — react Function Reference

Architecture documentation for the readContext() function in ReactCacheOld.js from the react codebase.

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BabelCompiler→ Validation→ readContext() — react Function Reference

Dependency Diagram

graph TD
  b1f19f9a_3867_3743_bfe1_e6823e5687ed["readContext()"]
  8ab83c6a_7f7f_de7c_f120_e86a1c481f9e["ReactCacheOld.js"]
  b1f19f9a_3867_3743_bfe1_e6823e5687ed -->|defined in| 8ab83c6a_7f7f_de7c_f120_e86a1c481f9e
  style b1f19f9a_3867_3743_bfe1_e6823e5687ed fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-cache/src/ReactCacheOld.js lines 50–62

function readContext(Context: ReactContext<mixed>) {
  const dispatcher = SharedInternals.H;
  if (dispatcher === null) {
    // This wasn't being minified but we're going to retire this package anyway.
    // eslint-disable-next-line react-internal/prod-error-codes
    throw new Error(
      'react-cache: read and preload may only be called from within a ' +
        "component's render. They are not supported in event handlers or " +
        'lifecycle methods.',
    );
  }
  return dispatcher.readContext(Context);
}