responseJsonMethods

Prefer Response.json() over new Response(JSON.stringify(...)) for JSON responses.

✅ This rule is included in the ts stylistic presets.

The Response.json() static method provides a cleaner way to create JSON responses compared to manually calling new Response(JSON.stringify(data)). Using Response.json() is more concise and automatically sets the Content-Type header to application/json.

This rule flags cases where new Response(JSON.stringify(data)) can be replaced with Response.json(data).

Examples

❌ Incorrect

new Response(JSON.stringify(data));

new Response(JSON.stringify({ message: "ok" }));

new Response(JSON.stringify(data), {});

new Response(JSON.stringify(data), {
  headers: { "content-type": "application/json" },
});

✅ Correct

Response.json(data);

Response.json({ message: "ok" });

new Response(JSON.stringify(data, null, 2));

new Response(JSON.stringify(data), { status: 404 });

new Response(text);

Options

This rule is not configurable.

When Not To Use It

If you need to pass additional options to JSON.stringify() like a replacer or space parameter, you’ll need to use the manual approach. Similarly, if you need to set custom response options like status or additional headers beyond Content-Type, use new Response() directly.

Further Reading

• MDN: Response.json()
• MDN: Response

Equivalents in Other Linters

• Biome: useStaticresponseJsonMethods