Extract ports

package.json

@@ -45,6 +45,7 @@
       "script": "lib",
       "env": {
         "NODE_ENV": "production",
+        "WEB_PORT": "8000",
         "EMAIL_PORT": "25"
       }
     },

src/index.tsx

@@ -8,6 +8,9 @@ import { promises as fs } from "fs";
 import writeFileAtomic from "write-file-atomic";
 import cryptoRandomString from "crypto-random-string";
 
+export const WEB_PORT = process.env.WEB_PORT ?? 8000;
+export const EMAIL_PORT = process.env.EMAIL_PORT ?? 2525;
+
 export const webServer = express()
   .use(express.static("static"))
   .use(express.urlencoded({ extended: true }))
@@ -71,7 +74,7 @@ export const webServer = express()
       )
     )
   )
-  .listen(process.env.WEB_PORT ?? 8000);
+  .listen(WEB_PORT);
 
 export const emailServer = new SMTPServer({
   disabledCommands: ["AUTH", "STARTTLS"],
@@ -111,7 +114,7 @@ export const emailServer = new SMTPServer({
       callback(new Error("Failed to receive message. Please try again."));
     });
   },
-}).listen(process.env.EMAIL_PORT ?? 2525);
+}).listen(EMAIL_PORT);
 
 function Layout({ children }: { children: React.ReactNode }) {
   return (

src/test.ts

@@ -1,8 +1,7 @@
-import { webServer, emailServer } from ".";
+import { webServer, emailServer, WEB_PORT, EMAIL_PORT } from ".";
 import nodemailer from "nodemailer";
 import axios from "axios";
 import qs from "qs";
-import { AddressInfo } from "net";
 
 test("create feed", async () => {
   const identifier = await createFeed();
@@ -154,10 +153,10 @@ afterAll(() => {
 });
 
 const webClient = axios.create({
-  baseURL: `http://localhost:${(webServer.address() as AddressInfo).port}`,
+  baseURL: `http://localhost:${WEB_PORT}`,
 });
 const emailClient = nodemailer.createTransport(
-  `smtp://localhost:${(emailServer.address() as AddressInfo).port}`
+  `smtp://localhost:${EMAIL_PORT}`
 );
 
 async function createFeed(): Promise<string> {