feat: support dynamic max-age

Author: tinywaves

src/cli.ts

@@ -29,10 +29,16 @@ const cliOptions = [
     usage: `htttp-server --cors`,
   },
   {
-    option: '-dc, --disable-cache',
+    option: '--disable-cache',
     description: 'Disable cache',
     defaultValue: false,
-    usage: `htttp-server -dc`,
+    usage: `htttp-server --disable-cache`,
+  },
+  {
+    option: '--max-age <maxAge>',
+    description: 'Set cache max-age',
+    defaultValue: 5,
+    usage: `htttp-server --max-age 5`,
   },
   {
     option: '--compress',
@@ -58,6 +64,7 @@ const server = new Server({
   dataPosition: opts.data,
   cors: JSON.parse(opts.cors),
   cache: !JSON.parse(opts.disableCache),
+  maxAge: Number(opts.maxAge),
   compress: JSON.parse(opts.compress),
 });
 server.start();

src/index.ts

@@ -20,6 +20,7 @@ export default class Server {
   cors: boolean = false;
   cache: boolean = true;
   compress: boolean = false;
+  maxAge: number = 5;
 
   constructor(options?: ServerOptions) {
     if (options?.port) {
@@ -46,6 +47,9 @@ export default class Server {
     if (options?.compress) {
       this.compress = true;
     }
+    if (options?.maxAge) {
+      this.maxAge = options.maxAge;
+    }
   }
 
   start() {
@@ -252,7 +256,7 @@ export default class Server {
     const stat = await fs.stat(file);
     const etag = `${stat.mtime.getTime ()}-${stat.size}`;
     res.setHeader('Etag', etag);
-    res.setHeader('Cache-Control', 'max-age=10');
+    res.setHeader('Cache-Control', `max-age=${this.maxAge}`);
     const ifNoneMatch = res.req?.headers['if-none-match'];
     if (ifNoneMatch && ifNoneMatch === etag) {
       res.statusCode = 304;

src/types.ts

@@ -7,6 +7,7 @@ export interface ServerOptions {
   cors?: boolean;
   cache?: boolean;
   compress?: boolean;
+  maxAge?: number;
 }
 
 export type Res = http.ServerResponse<http.IncomingMessage> & {