jarle Error Handling
Learn how to handle errors in Bun's development server
To activate development mode, set development: true.
Bun.serve({
development: true, // [!code ++]
fetch(req) {
throw new Error("woops!");
},
});
In development mode, Bun will surface errors in-browser with a built-in error page.
error callback
To handle server-side errors, implement an error handler. This function should return a Response to serve to the client when an error occurs. This response will supersede Bun's default error page in development mode.
Bun.serve({
fetch(req) {
throw new Error("woops!");
},
error(error) {
return new Response(`<pre>${error}\n${error.stack}</pre>`, {
headers: {
"Content-Type": "text/html",
},
});
},
});