Guidance

How to create a cli ?

CLI is GUI

CLI 和 浏览器 都属于 GUI

通用

• IIFE

  • Immediately Invoked Function Expression 避免全局污染

• chalk

  • 给 Console.log 上色

• log-symbols

  • 给 Console.log 增加图标
  • 结合 chalk
    • success
    • warning
    • info
    • error

• spinner

  • ora

约定

• command style

  • input

    • commands

  • options

    • flags

• meow

  • 接管 命令行 命令 与 参数列表
  • help command & flag
  • version flag

• debug flag

• help text format

  • Usage
  • Options
  • Commands
  • Examples

初始化阶段

• layout

  • header / welcome 信息

• handle unhandled error

• check node version

Data Fetch

• await-to-js

  • a good pal for Promise

• node-fetch

• axios

CLI Prompts

• enquirer
  • Questions
    • Ask a question
      • 可取消
      • different type
      • support custom validation

What CLI do

Copy Files

• copy-template-dir

  • dedup

  await execa("npm", ["dedup"]);
  

• dependencies installation

  // pkgs install
  const pkgs = ["meow", "cli-meow-help"];
  await execa("npm", ["install", ...pkgs]);