Introduction to ansi-wrap

The ansi-wrap library is a powerful tool for working with ANSI escape codes in JavaScript. ANSI escape codes are used to control text formatting, color, and other output options on text terminals. The ansi-wrap library simplifies the process of applying these codes, making it easier to create visually appealing terminal output.

Key Features and APIs

The ansi-wrap library offers several useful APIs for developers. Below, we’ll explore some of the most commonly used functions with examples:

1. wrapAnsi16(code, text)

If you need to wrap text with a 16-color ANSI escape code, use the wrapAnsi16 function.

  const wrapAnsi16 = require('ansi-wrap/wrapAnsi16');
  console.log(wrapAnsi16(31, 'This text will be red'));

2. wrapAnsi256(code, text)

For 256-color ANSI escape codes, wrapAnsi256 is the function to use.

  const wrapAnsi256 = require('ansi-wrap/wrapAnsi256');
  console.log(wrapAnsi256(196, 'This text will be bright red'));

3. wrapAnsiRgb(r, g, b, text)

Use wrapAnsiRgb to apply RGB color codes to your text output.

  const wrapAnsiRgb = require('ansi-wrap/wrapAnsiRgb');
  console.log(wrapAnsiRgb(255, 165, 0, 'This text will be orange'));

4. wrapAnsiStyle(openingCode, closingCode, text)

The wrapAnsiStyle function allows for more flexible style wrapping.

  const wrapAnsiStyle = require('ansi-wrap/wrapAnsiStyle');
  console.log(wrapAnsiStyle(1, 22, 'This text will be bold'));

Application Example

Let’s create a simple app that utilizes these APIs to enhance terminal output.

  const wrapAnsi16 = require('ansi-wrap/wrapAnsi16');
  const wrapAnsi256 = require('ansi-wrap/wrapAnsi256');
  const wrapAnsiRgb = require('ansi-wrap/wrapAnsiRgb');
  const wrapAnsiStyle = require('ansi-wrap/wrapAnsiStyle');

  console.log(wrapAnsi16(31, 'Error:'));
  console.log(wrapAnsiRgb(255, 0, 0, ' This is a critical error message'));
  
  console.log(wrapAnsi16(34, 'Info:'));
  console.log(wrapAnsiRgb(0, 255, 255, ' This is an informational message'));

  console.log(wrapAnsi16(33, 'Warning:'));
  console.log(wrapAnsiRgb(255, 255, 0, ' This is a warning message'));

  console.log(wrapAnsiStyle(1, 22, 'Bold Text'));

By combining different ansi-wrap functions, you can develop a more engaging and maintainable terminal output experience.

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