EC
TS2608
TypeScriptERRORNotableTypeHIGH confidence

The global type 'JSX.X' may not have more than one property.

Production Risk

Build will fail; resolve before shipping.

What this means

A type-checking error (TS2608): The global type 'JSX.X' may not have more than one property.. This diagnostic is emitted by the TypeScript compiler when the global type 'JSX.X' may not have more than one property..

Why it happens
  1. 1JSX syntax used without enabling '--jsx' compiler option
  2. 2Missing React or JSX runtime import
How to reproduce

TypeScript compiler reports TS2608 during type checking.

trigger — this will error
trigger — this will error
// Triggers TS2608
// The global type 'JSX.X' may not have more than one property.

expected output

error TS2608: The global type 'JSX.X' may not have more than one property.

Fix

Enable JSX in tsconfig.json

WHEN Using JSX syntax in TypeScript files

Enable JSX in tsconfig.json
// tsconfig.json
{
  "compilerOptions": {
    "jsx": "react-jsx"  // or "react", "preserve", etc.
  }
}

Why this works

The '--jsx' option tells TypeScript how to transform JSX; choose 'react-jsx' for React 17+ or 'react' for older versions.

Sources
Official documentation ↗

TypeScript Compiler Diagnostics

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