import type { RequestListener } from 'http'
export function createServer () {
const listener = createDynamicFunction(createLoadingHandler('Loading...', 1))
async function listen (opts) {
const { listen } = await import('listhen')
return listen(listener.call, opts)
}
return {
setApp: (app: RequestListener) => listener.set(app),
listen
}
}
export function createLoadingHandler (message: string, retryAfter = 60): RequestListener {
return (_req, res) => {
res.setHeader('Content-Type', 'text/html; charset=UTF-8')
res.statusCode = 503 /* Service Unavailable */
res.setHeader('Retry-After', retryAfter)
res.end(`${message}`)
}
}
function createDynamicFunction any>(initialValue: T) {
let fn: T = initialValue
return {
set: (newFn: T) => { fn = newFn },
call: ((...args) => fn(...args)) as T
}
}