示例：微型命令行接口

¥Example: Tiny CLI

下面的例子说明了使用 readline.Interface 类来实现一个微型的命令行接口：

¥The following example illustrates the use of readline.Interface class to implement a small command-line interface:

import { createInterface } from 'node:readline';
import { exit, stdin, stdout } from 'node:process';
const rl = createInterface({
  input: stdin,
  output: stdout,
  prompt: 'OHAI> ',
});

rl.prompt();

rl.on('line', (line) => {
  switch (line.trim()) {
    case 'hello':
      console.log('world!');
      break;
    default:
      console.log(`Say what? I might have heard '${line.trim()}'`);
      break;
  }
  rl.prompt();
}).on('close', () => {
  console.log('Have a great day!');
  exit(0);
});const { createInterface } = require('node:readline');
const rl = createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: 'OHAI> ',
});

rl.prompt();

rl.on('line', (line) => {
  switch (line.trim()) {
    case 'hello':
      console.log('world!');
      break;
    default:
      console.log(`Say what? I might have heard '${line.trim()}'`);
      break;
  }
  rl.prompt();
}).on('close', () => {
  console.log('Have a great day!');
  process.exit(0);
});拷贝