Node.js Cmd相关

Review

  1. 2023-03-19 07:17

一、Introduction #

用户方便开发CMD工具。

二、相关库 #

2.1, commander.js #

The complete solution for  node.js command-line interfaces. https://github.com/tj/commander.js

npm install commander

Usage

const { program } = require('commander');

program
  .option('--first')
  .option('-s, --separator <char>');

program.parse();

const options = program.opts();
const limit = options.first ? 1 : undefined;
console.log(program.args[0].split(options.separator, limit));

2.2, cli-progress #

easy to use progress-bar for command-line/terminal applications https://github.com/npkgz/cli-progress

yarn add cli-progress

Features #

  • Simple, Robust and Easy to use
  • Full customizable output format (various placeholders are available)
  • Single progressbar mode
  • Multi progessbar mode
  • Custom Bar Characters
  • FPS limiter
  • ETA calculation based on elapsed time
  • Custom Tokens to display additional data (payload) within the bar
  • TTY and NOTTY mode
  • No callbacks required - designed as pure, external controlled UI widget
  • Works in Asynchronous and Synchronous tasks
  • Preset/Theme support
  • Custom bar formatters (via callback)
  • Logging during multibar operation
const cliProgress = require('cli-progress');

// note: you have to install this dependency manually since it's not required by cli-progress
const colors = require('ansi-colors');

// create new progress bar
const b1 = new cliProgress.SingleBar({
    format: 'CLI Progress |' + colors.cyan('{bar}') + '| {percentage}% || {value}/{total} Chunks || Speed: {speed}',
    barCompleteChar: '\u2588',
    barIncompleteChar: '\u2591',
    hideCursor: true
});

// initialize the bar - defining payload token "speed" with the default value "N/A"
b1.start(200, 0, {
    speed: "N/A"
});

// update values
b1.increment();
b1.update(20);

// stop the bar
b1.stop();

2.3, console color #

  1. Chalk
  2. colors
  3. clc-color

自定义

const Color = {
  Reset: "\x1b[0m",
  Bright: "\x1b[1m",
  Dim: "\x1b[2m",
  Underscore: "\x1b[4m",
  Blink: "\x1b[5m",
  Reverse: "\x1b[7m",
  Hidden: "\x1b[8m",
  
  FgBlack: "\x1b[30m",
  FgRed: "\x1b[31m",
  FgGreen: "\x1b[32m",
  FgYellow: "\x1b[33m",
  FgBlue: "\x1b[34m",
  FgMagenta: "\x1b[35m",
  FgCyan: "\x1b[36m",
  FgWhite: "\x1b[37m",
  FgGray: "\x1b[90m",
  
  BgBlack: "\x1b[40m",
  BgRed: "\x1b[41m",
  BgGreen: "\x1b[42m",
  BgYellow: "\x1b[43m",
  BgBlue: "\x1b[44m",
  BgMagenta: "\x1b[45m",
  BgCyan: "\x1b[46m",
  BgWhite: "\x1b[47m"
  BgGray: "\x1b[100m",
}

Reference #