File: typescript-cannot-find-namespace-jsx.md | Updated: 11/15/2025
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TypeScript error "Cannot find namespace 'JSX'"
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TypeScript error "Cannot find namespace 'JSX'"
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I am using the AI SDK in a project without React, e.g. an Hono server, and I get the following error: error TS2503: Cannot find namespace 'JSX'.
The AI SDK has a dependency on @types/react which defines the JSX namespace. It will be removed in the next major version of the AI SDK.
You can install the @types/react package as a dependency to fix the error.
npm install @types/react
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TypeScript error "Cannot find namespace 'JSX'"
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