/Wiki/sources/honojs__hono/2026/https-hono-dev-llms-full-txt-error-handling-d0290d4d7fcb-error-handling-s0677-c0000.md
Error Handling (1) - hono-docs
Error Handling (1) Source evidence: /Sources/raw/honojs hono/honojs hono.md Canonical citation: https://hono.dev/llms full.txt error handling Summary The thi...
Error Handling (1)
Source evidence: /Sources/raw/honojshono/honojshono.md Canonical citation: https://hono.dev/llms-full.txt#error-handling
Summary
The third argument of the streaming helper is an error handler. This argument is optional, if you don't specify it, the error will be output as a console error. ```ts app.get('/stream', (c) => { return stream( c, async (stream) => { // W...
Content
The third argument of the streaming helper is an error handler. This argument is optional, if you don't specify it, the error will be output as a console error.
app.get('/stream', (c) => {
return stream(
c,
async (stream) => {
// Write a process to be executed when aborted.
stream.onAbort(() => {
console.log('Aborted!')
})
// Write a Uint8Array.
await stream.write(
new Uint8Array([0x48, 0x65, 0x6c, 0x6c, 0x6f])
)
// Pipe a readable stream.
await stream.pipe(anotherReadableStream)
},
(err, stream) => {
stream.writeln('An error occurred!')
console.error(err)
}
)
})The stream will be automatically closed after the callbacks are executed.
::: warning
If the callback function of the streaming helper throws an error, the onError event of Hono will not be triggered.
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