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Typegen with Next.js 15 and Sanity CMS

This guide demonstrates how to implement TypeScript type generation (typegen) with Next.js 15 and the latest version of Sanity CMS.

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Generate TypeScript Types

Step 1: Extracting the Schema

Add the following command to the scripts section of your package.json file:

"typegen": "sanity schema extract --path=./src/sanity/extract.json && sanity typegen generate"

Example screenshot for reference:

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Step 2: Generate TypeScript Types

create a new json file in your root directory:

sanity-typegen.json

{
  "path": "./src/**/*.{ts,tsx,js,jsx}",
  "schema": "./src/sanity/extract.json",
  "generates": "./src/sanity/types.ts"
}

Step 3: Run the Command

To generate the TypeScript types, simply run the following command in your terminal:

npm run typegen

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Result

After successfully executing the command, you will receive the following confirmation:

✅ TypeScript types generated for 15 schema types and 2 GROQ queries in a single file:
./src/sanity/types.ts

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