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Showing content from https://github.com/bokub/gradient-string below:

bokub/gradient-string: :rainbow: Beautiful color gradients in terminal output

Beautiful color gradients in terminal output

import gradient from 'gradient-string';

console.log(gradient(['cyan', 'pink'])('Hello world!'));

// Provide an array of colors
const coolGradient = gradient(['#FF0000', '#00FF00', '#0000FF']);

The colors are parsed with TinyColor, multiple formats are accepted.

const coolGradient = gradient([
  tinycolor('#FFBB65'), // tinycolor object
  { r: 0, g: 255, b: 0 }, // RGB object
  { h: 240, s: 1, v: 1, a: 1 }, // HSVa object
  'rgb(120, 120, 0)', // RGB CSS string
  'gold', // named color
]);

const coolString = coolGradient('This is a fancy string!');
console.log(coolString);

import { rainbow, pastel } from 'gradient-string';

// Use the pastel built-in gradient
console.log(pastel('I love gradient-string!'));

// Use the rainbow built-in gradient
console.log(rainbow('It is so pretty! 🌈'));

In some cases, you may want to apply the same horizontal gradient on each line of a long text (or a piece of ASCII art).

You can use the multiline() method of a gradient to ensure that the colors are vertically aligned.

import gradient, { rainbow } from 'gradient-string';

// Use the same gradient on every line
const duck = gradient(['green', 'yellow']).multiline(`
  __
<(o )___
 ( ._> /
   ---
`);
console.log(duck);

// Works with aliases
rainbow.multiline('Multi line\nstring');

// Works with advanced options (read below)
gradient(['cyan', 'pink'], { interpolation: 'hsv' }).multiline('Multi line\nstring');

There are also more advanced options for gradient customization, such as custom color stops, or choice of color interpolation

By default, the gradient color stops are distributed equidistantly.

You can specify the position of each color stop (between 0 and 1), using the following syntax:

let coolGradient = gradient([
  { color: '#d8e0de', pos: 0 },
  { color: '#255B53', pos: 0.8 },
  { color: '#000000', pos: 1 },
]);

When creating a gradient, you can provide a second parameter to choose how the colors will be generated.

Here is the full gradient API:

Type: Array<Color>
Colors of the gradient. Multiple formats are accepted.

Type: String
String you want to color.

Type: Object (optional)

Type: string
The gradient can be generated using RGB or HSV interpolation. HSV usually produces brighter colors. interpolation can be set to rgb for RGB interpolation, orhsv for HSV interpolation.
Defaults to rgb. Case-insensitive

Type: string
Used only in the case of HSV interpolation.
Because hue can be considered as a circle, there are two ways to go from a color to another color.
hsvSpin can be either short or long, depending on if you want to take the shortest or the longest way between two colors.
Defaults to short. Case-insensitive

const str = '■'.repeat(48);

// Standard RGB gradient
const standardRGBGradient = gradient(['red', 'green']);

// Short HSV gradient: red -> yellow -> green
const shortHSVGradient = gradient(['red', 'green'], { interpolation: 'hsv' });

// Long HSV gradient: red -> magenta -> blue -> cyan -> green
const longHSVGradient = gradient(['red', 'green'], { interpolation: 'hsv', hsvSpin: 'long' });

console.log(standardRGBGradient(str));
console.log(shortHSVGradient(str));
console.log(longHSVGradient(str));

• chalk - Output colored text to terminal
• tinygradient - Generate gradients

MIT © Boris K

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