For AI agents: the complete documentation index is available at /next/llms.txt, the full documentation bundle is available at /next/llms-full.txt, and this page is available as Markdown at /next/api/react/Functions/createContext.md.
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      • Function: createContext()

      createContext<T>(defaultValue: T): Context<T>

      Lets you create a Context that components can provide or read.

      Type Parameters

      Type Parameter
      T

      Parameters

      ParameterTypeDescription
      defaultValueTThe value you want the context to have when there is no matching Provider in the tree above the component reading the context. This is meant as a "last resort" fallback.

      Returns

      Context<T>

      See

      Example

      import { createContext } from 'react';

const ThemeContext = createContext('light');
function App() {
  return (
    <ThemeContext value="dark">
      <Toolbar />
    </ThemeContext>
  );
}
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