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error.ts
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error.ts
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import { withQuery } from 'ufo'
import type { NitroErrorHandler } from 'nitropack'
import type { H3Error } from 'h3'
import { getRequestHeaders, H3Response } from 'h3'
import { useNitroApp } from '#internal/nitro'
import { normalizeError, isJsonRequest } from '#internal/nitro/utils'
export default <NitroErrorHandler> async function errorhandler (error: H3Error, event) {
// Parse and normalize error
const { stack, statusCode, statusMessage, message } = normalizeError(error)
// Create an error object
const errorObject = {
url: event.req.url,
statusCode,
statusMessage,
message,
stack: process.dev && statusCode !== 404
? `<pre>${stack.map(i => `<span class="stack${i.internal ? ' internal' : ''}">${i.text}</span>`).join('\n')}</pre>`
: '',
data: error.data
}
// Set response code and message
event.res.statusCode = (errorObject.statusCode !== 200 && errorObject.statusCode) as any as number || 500
if (errorObject.statusMessage) {
event.res.statusMessage = errorObject.statusMessage
}
// Console output
if (error.unhandled || error.fatal) {
const tags = [
'[nuxt]',
'[request error]',
error.unhandled && '[unhandled]',
error.fatal && '[fatal]',
Number(errorObject.statusCode) !== 200 && `[${errorObject.statusCode}]`
].filter(Boolean).join(' ')
console.error(tags, errorObject.message + '\n' + stack.map(l => ' ' + l.text).join(' \n'))
}
// JSON response
if (isJsonRequest(event)) {
event.res.setHeader('Content-Type', 'application/json')
event.res.end(JSON.stringify(errorObject))
return
}
// HTML response (via SSR)
const isErrorPage = event.req.url?.startsWith('/__nuxt_error')
const res = !isErrorPage
? await useNitroApp().localFetch(withQuery('/__nuxt_error', errorObject), {
headers: getRequestHeaders(event) as Record<string, string>,
redirect: 'manual'
}).catch(() => null)
: null
// Fallback to static rendered error page
if (!res) {
const { template } = process.dev
// @ts-ignore
? await import('@nuxt/ui-templates/templates/error-dev.mjs')
// @ts-ignore
: await import('@nuxt/ui-templates/templates/error-500.mjs')
if (process.dev) {
// TODO: Support `message` in template
(errorObject as any).description = errorObject.message
}
event.res.setHeader('Content-Type', 'text/html;charset=UTF-8')
return event.res.end(template(errorObject))
}
event.respondWith(new H3Response(await res.text(), {
headers: res.headers,
status: res.status === 200 ? errorObject.statusCode : res.status,
statusText: res.statusText || errorObject.statusMessage
}))
}