mirror of https://github.com/nuxt/nuxt.git
112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
const Youch = require('@nuxtjs/youch')
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const { join, resolve, relative, isAbsolute } = require('path')
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const { readFile } = require('fs-extra')
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module.exports = function errorMiddleware(err, req, res, next) {
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// ensure statusCode, message and name fields
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err.statusCode = err.statusCode || 500
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err.message = err.message || 'Nuxt Server Error'
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err.name = !err.name || err.name === 'Error' ? 'NuxtServerError' : err.name
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// We hide actual errors from end users, so show them on server logs
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if (err.statusCode !== 404) {
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console.error(err) // eslint-disable-line no-console
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}
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const sendResponse = (content, type = 'text/html') => {
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// Set Headers
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res.statusCode = err.statusCode
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res.statusMessage = err.name
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res.setHeader('Content-Type', type + '; charset=utf-8')
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res.setHeader('Content-Length', Buffer.byteLength(content))
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// Send Response
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res.end(content, 'utf-8')
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}
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// Check if request accepts JSON
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const hasReqHeader = (header, includes) =>
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req.headers[header] && req.headers[header].toLowerCase().includes(includes)
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const isJson =
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hasReqHeader('accept', 'application/json') ||
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hasReqHeader('user-agent', 'curl/')
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// Use basic errors when debug mode is disabled
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if (!this.options.debug) {
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// Json format is compatible with Youch json responses
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const json = {
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status: err.statusCode,
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message: err.message,
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name: err.name
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}
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if (isJson) {
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sendResponse(JSON.stringify(json, undefined, 2), 'text/json')
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return
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}
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const html = this.resources.errorTemplate(json)
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sendResponse(html)
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return
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}
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// Show stack trace
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const youch = new Youch(
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err,
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req,
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readSource.bind(this),
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this.options.router.base,
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true
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)
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if (isJson) {
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youch.toJSON().then(json => {
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sendResponse(JSON.stringify(json, undefined, 2), 'text/json')
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})
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} else {
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youch.toHTML().then(html => {
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sendResponse(html)
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})
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}
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}
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async function readSource(frame) {
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// Remove webpack:/// & query string from the end
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const sanitizeName = name =>
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name ? name.replace('webpack:///', '').split('?')[0] : null
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frame.fileName = sanitizeName(frame.fileName)
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// Return if fileName is unknown
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/* istanbul ignore if */
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if (!frame.fileName) {
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return
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}
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// Possible paths for file
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const searchPath = [
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this.options.srcDir,
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this.options.rootDir,
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join(this.options.buildDir, 'dist'),
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this.options.buildDir,
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process.cwd()
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]
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// Scan filesystem for real source
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for (let pathDir of searchPath) {
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let fullPath = resolve(pathDir, frame.fileName)
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let source = await readFile(fullPath, 'utf-8').catch(() => null)
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if (source) {
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frame.contents = source
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frame.fullPath = fullPath
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if (isAbsolute(frame.fileName)) {
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frame.fileName = relative(this.options.rootDir, fullPath)
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}
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return
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}
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}
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// Fallback: use server bundle
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// TODO: restore to if after https://github.com/istanbuljs/nyc/issues/595 fixed
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/* istanbul ignore next */
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if (!frame.contents) {
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frame.contents = this.resources.serverBundle.files[frame.fileName]
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}
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}
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