index.js

#!/usr/bin/env node

import inquirer from 'inquirer';
import { startCompress } from './compress.js';
import { mb2b } from './utils.js';

// 获取命令执行路径
const cwd = process.cwd();

const DEFAULT_SIZE = 5;

inquirer
  .prompt([
    {
      type: 'checkbox',
      message: 'Select image format',
      name: 'ext',
      default: ['.jpg', '.jpeg', '.png'],
      choices: [
        {
          name: '.jpg',
        },
        {
          name: '.jpeg',
        },
        {
          name: '.png',
        },
        {
          name: '.bmp',
        },
        {
          name: '.webp',
        },
      ],
      validate(answer) {
        if (answer.length < 1) {
          return 'You must choose at least one image format.';
        }

        return true;
      },
    },
    {
      type: 'input',
      name: 'maxSize',
      message: 'Input image max size (MB).',
      default() {
        return DEFAULT_SIZE;
      },
      validate(value = DEFAULT_SIZE) {
        const pass = value.toString().match(/^[1-9]{1,}\d*$/) && value <= DEFAULT_SIZE;
        if (pass) {
          return true;
        }

        return 'Please enter a valid max size';
      },
    },

    {
      type: 'confirm',
      name: 'isOverwrite',
      message: 'Whether to overwrite the source file?',
      default: false,
    },
    {
      type: 'confirm',
      name: 'isRecursion',
      message: 'Whether recursion?',
      default: false,
    },
  ])
  .then(answers => {
    const { ext, maxSize, isOverwrite, isRecursion } = answers;

    // TODO 不想使用透传，所以将参数设置为全局变量
    global.ext = ext;
    global.maxSize = mb2b(maxSize);
    global.isOverwrite = isOverwrite;
    global.isRecursion = isRecursion;

    startCompress(cwd);
  });