Add index.html fallback

Author: n4bb12

lib/fastify-static.ts

@@ -1,13 +1,18 @@
 import { FastifyInstance } from "fastify"
 import fastifyStatic from "fastify-static"
 import path from "path"
+
 import { Config } from "./types"
 
 //
 // https://github.com/fastify/fastify-static#fastify-static
 //
 export function registerServeStatic(server: FastifyInstance, config: Config) {
+  server.setNotFoundHandler((req, res) => {
+    res.sendFile("index.html", config.staticDir)
+  })
   server.register(fastifyStatic, {
     root: path.resolve(config.staticDir),
+    serve: false,
   })
 }

lib/github-oauth.ts

@@ -3,7 +3,7 @@ import { FastifyInstance, FastifyReply, FastifyRequest } from "fastify"
 import { nanoid } from "nanoid"
 import { URLSearchParams } from "url"
 
-import { GitHubAccessToken, GitHubOrgMembership, GitHubUser, RoutePrams, Config, OAuthState } from "./types"
+import { Config, GitHubAccessToken, GitHubOrgMembership, GitHubUser, OAuthState, RoutePrams } from "./types"
 
 export function registerGitHubOAuth(server: FastifyInstance, config: Config) {
   const secureCookies = !!process.env.VERCEL_URL

lib/index.ts

@@ -1,6 +1,7 @@
 import { NowApiHandler } from "@vercel/node"
 import fastify from "fastify"
 import assert from "ow"
+
 import { registerCookieMiddleware } from "./fastify-cookie"
 import { createLambdaHandler } from "./fastify-lambda"
 import { registerServeStatic } from "./fastify-static"