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async addExportPathMapRoutes () {
// Makes `next export` exportPathMap work in development mode.
// So that the user doesn't have to define a custom server reading the exportPathMap
if (this.nextConfig.exportPathMap) {
console.log('Defining routes from exportPathMap')
const exportPathMap = await this.nextConfig.exportPathMap({}, {dev: true, dir: this.dir, outDir: null, distDir: this.distDir, buildId: this.buildId}) // In development we can't give a default path mapping
for (const path in exportPathMap) {
const {page, query = {}} = exportPathMap[path]
// We use unshift so that we're sure the routes is defined before Next's default routes
this.router.add({
match: route(path),
fn: async (req, res, params, parsedUrl) => {
const { query: urlQuery } = parsedUrl
Object.keys(urlQuery)
.filter(key => query[key] === undefined)
.forEach(key => console.warn(`Url defines a query parameter '${key}' that is missing in exportPathMap`))
const mergedQuery = {...urlQuery, ...query}
await this.render(req, res, page, mergedQuery, parsedUrl)
}
})
}
}
}
generateRoutes () {
const routes = super.generateRoutes()
// In development we expose all compiled files for react-error-overlay's line show feature
// We use unshift so that we're sure the routes is defined before Next's default routes
routes.unshift({
match: route('/_next/development/:path*'),
fn: async (req, res, params) => {
const p = join(this.distDir, ...(params.path || []))
await this.serveStatic(req, res, p)
}
})
return routes
}