feat: use commander to catch cli input

Author: tinywaves

package.json

@@ -31,11 +31,13 @@
     "build": "tsup",
     "build:dev": "tsup --watch",
     "dev": "tsx watch --clear-screen=false src/index.ts",
+    "dev:cli": "tsx watch --clear-screen=false src/cli.ts",
     "release": "bumpp",
     "release:publish": "pnpm release && pnpm publish"
   },
   "dependencies": {
-    "chalk": "^5.3.0"
+    "chalk": "^5.3.0",
+    "commander": "^12.1.0"
   },
   "devDependencies": {
     "@dhzh/eslint-config": "^0.15.1",

pnpm-lock.yaml

@@ -1,4 +1,35 @@
+import process from 'node:process';
+import { program } from 'commander';
 import Server from '.';
+import { DEFAULT_PORT, DEFAULT_BASE_DIR } from './constants';
 
-const server = new Server();
+const cliOptions = [
+  {
+    option: '-p, --port <port>',
+    description: 'The port to listen on',
+    defaultValue: DEFAULT_PORT,
+    usage: `htttp-server -p ${DEFAULT_PORT}`,
+  },
+  {
+    option: '-d, --directory <directory>',
+    description: 'The directory to serve',
+    defaultValue: DEFAULT_BASE_DIR,
+    usage: `htttp-server -d ${DEFAULT_BASE_DIR}`,
+  },
+];
+
+cliOptions.forEach(({ option, description, defaultValue }) => program.option(option, description, defaultValue.toString()));
+program.on('--help', () => {
+  console.log('Examples:');
+  cliOptions
+    .map(({ usage }) => usage)
+    .forEach((usage) => console.log(`\x20\x20${usage}`));
+});
+program.parse(process.argv);
+const opts = program.opts();
+
+const server = new Server({
+  port: opts.port,
+  baseDir: opts.directory,
+});
 server.start();

src/cli.ts

@@ -0,0 +1,4 @@
+import process from 'node:process';
+
+export const DEFAULT_PORT = 8080;
+export const DEFAULT_BASE_DIR = process.cwd();

src/constants.ts

@@ -1,14 +1,14 @@
-import process from 'node:process';
 import * as http from 'node:http';
 import * as os from 'node:os';
 import * as fs from 'node:fs/promises';
 import * as path from 'node:path';
 import chalk from 'chalk';
+import { DEFAULT_PORT, DEFAULT_BASE_DIR } from './constants';
 import type { ServerOptions } from './types';
 
 export default class Server {
-  port: number = 8080;
-  baseDir: string = process.cwd();
+  port: number = DEFAULT_PORT;
+  baseDir: string = DEFAULT_BASE_DIR;
 
   constructor(options?: ServerOptions) {
     if (options?.port) {
@@ -35,7 +35,7 @@ export default class Server {
       }
     });
     server.listen(this.port, () => {
-      console.log(chalk.yellow('Server is running on:'));
+      console.log(chalk.yellow('Server is running on:'), ` ${this.baseDir}`);
       this
         .getOsHosts()
         .forEach((host) => console.log(`\x20\x20${host}`));