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526 lines
11 KiB
TypeScript
526 lines
11 KiB
TypeScript
// Loaded from https://deno.land/std@0.89.0/fmt/colors.ts
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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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// A module to print ANSI terminal colors. Inspired by chalk, kleur, and colors
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// on npm.
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//
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// ```
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// import { bgBlue, red, bold } from "https://deno.land/std/fmt/colors.ts";
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// console.log(bgBlue(red(bold("Hello world!"))));
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// ```
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//
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// This module supports `NO_COLOR` environmental variable disabling any coloring
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// if `NO_COLOR` is set.
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//
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// This module is browser compatible.
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const noColor = globalThis.Deno?.noColor ?? true;
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interface Code {
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open: string;
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close: string;
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regexp: RegExp;
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}
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/** RGB 8-bits per channel. Each in range `0->255` or `0x00->0xff` */
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interface Rgb {
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r: number;
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g: number;
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b: number;
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}
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let enabled = !noColor;
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/**
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* Set changing text color to enabled or disabled
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* @param value
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*/
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export function setColorEnabled(value: boolean): void {
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if (noColor) {
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return;
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}
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enabled = value;
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}
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/** Get whether text color change is enabled or disabled. */
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export function getColorEnabled(): boolean {
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return enabled;
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}
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/**
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* Builds color code
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* @param open
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* @param close
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*/
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function code(open: number[], close: number): Code {
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return {
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open: `\x1b[${open.join(";")}m`,
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close: `\x1b[${close}m`,
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regexp: new RegExp(`\\x1b\\[${close}m`, "g"),
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};
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}
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/**
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* Applies color and background based on color code and its associated text
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* @param str text to apply color settings to
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* @param code color code to apply
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*/
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function run(str: string, code: Code): string {
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return enabled
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? `${code.open}${str.replace(code.regexp, code.open)}${code.close}`
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: str;
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}
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/**
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* Reset the text modified
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* @param str text to reset
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*/
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export function reset(str: string): string {
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return run(str, code([0], 0));
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}
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/**
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* Make the text bold.
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* @param str text to make bold
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*/
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export function bold(str: string): string {
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return run(str, code([1], 22));
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}
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/**
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* The text emits only a small amount of light.
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* @param str text to dim
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*/
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export function dim(str: string): string {
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return run(str, code([2], 22));
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}
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/**
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* Make the text italic.
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* @param str text to make italic
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*/
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export function italic(str: string): string {
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return run(str, code([3], 23));
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}
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/**
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* Make the text underline.
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* @param str text to underline
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*/
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export function underline(str: string): string {
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return run(str, code([4], 24));
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}
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/**
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* Invert background color and text color.
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* @param str text to invert its color
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*/
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export function inverse(str: string): string {
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return run(str, code([7], 27));
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}
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/**
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* Make the text hidden.
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* @param str text to hide
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*/
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export function hidden(str: string): string {
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return run(str, code([8], 28));
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}
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/**
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* Put horizontal line through the center of the text.
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* @param str text to strike through
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*/
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export function strikethrough(str: string): string {
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return run(str, code([9], 29));
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}
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/**
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* Set text color to black.
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* @param str text to make black
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*/
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export function black(str: string): string {
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return run(str, code([30], 39));
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}
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/**
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* Set text color to red.
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* @param str text to make red
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*/
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export function red(str: string): string {
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return run(str, code([31], 39));
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}
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/**
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* Set text color to green.
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* @param str text to make green
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*/
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export function green(str: string): string {
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return run(str, code([32], 39));
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}
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/**
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* Set text color to yellow.
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* @param str text to make yellow
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*/
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export function yellow(str: string): string {
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return run(str, code([33], 39));
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}
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/**
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* Set text color to blue.
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* @param str text to make blue
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*/
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export function blue(str: string): string {
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return run(str, code([34], 39));
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}
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/**
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* Set text color to magenta.
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* @param str text to make magenta
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*/
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export function magenta(str: string): string {
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return run(str, code([35], 39));
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}
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/**
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* Set text color to cyan.
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* @param str text to make cyan
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*/
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export function cyan(str: string): string {
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return run(str, code([36], 39));
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}
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/**
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* Set text color to white.
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* @param str text to make white
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*/
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export function white(str: string): string {
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return run(str, code([37], 39));
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}
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/**
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* Set text color to gray.
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* @param str text to make gray
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*/
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export function gray(str: string): string {
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return brightBlack(str);
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}
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/**
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* Set text color to bright black.
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* @param str text to make bright-black
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*/
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export function brightBlack(str: string): string {
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return run(str, code([90], 39));
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}
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/**
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* Set text color to bright red.
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* @param str text to make bright-red
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*/
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export function brightRed(str: string): string {
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return run(str, code([91], 39));
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}
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/**
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* Set text color to bright green.
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* @param str text to make bright-green
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*/
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export function brightGreen(str: string): string {
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return run(str, code([92], 39));
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}
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/**
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* Set text color to bright yellow.
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* @param str text to make bright-yellow
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*/
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export function brightYellow(str: string): string {
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return run(str, code([93], 39));
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}
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/**
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* Set text color to bright blue.
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* @param str text to make bright-blue
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*/
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export function brightBlue(str: string): string {
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return run(str, code([94], 39));
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}
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/**
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* Set text color to bright magenta.
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* @param str text to make bright-magenta
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*/
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export function brightMagenta(str: string): string {
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return run(str, code([95], 39));
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}
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/**
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* Set text color to bright cyan.
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* @param str text to make bright-cyan
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*/
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export function brightCyan(str: string): string {
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return run(str, code([96], 39));
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}
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/**
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* Set text color to bright white.
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* @param str text to make bright-white
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*/
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export function brightWhite(str: string): string {
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return run(str, code([97], 39));
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}
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/**
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* Set background color to black.
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* @param str text to make its background black
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*/
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export function bgBlack(str: string): string {
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return run(str, code([40], 49));
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}
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/**
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* Set background color to red.
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* @param str text to make its background red
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*/
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export function bgRed(str: string): string {
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return run(str, code([41], 49));
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}
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/**
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* Set background color to green.
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* @param str text to make its background green
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*/
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export function bgGreen(str: string): string {
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return run(str, code([42], 49));
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}
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/**
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* Set background color to yellow.
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* @param str text to make its background yellow
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*/
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export function bgYellow(str: string): string {
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return run(str, code([43], 49));
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}
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/**
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* Set background color to blue.
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* @param str text to make its background blue
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*/
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export function bgBlue(str: string): string {
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return run(str, code([44], 49));
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}
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/**
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* Set background color to magenta.
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* @param str text to make its background magenta
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*/
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export function bgMagenta(str: string): string {
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return run(str, code([45], 49));
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}
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/**
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* Set background color to cyan.
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* @param str text to make its background cyan
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*/
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export function bgCyan(str: string): string {
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return run(str, code([46], 49));
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}
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/**
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* Set background color to white.
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* @param str text to make its background white
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*/
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export function bgWhite(str: string): string {
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return run(str, code([47], 49));
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}
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/**
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* Set background color to bright black.
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* @param str text to make its background bright-black
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*/
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export function bgBrightBlack(str: string): string {
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return run(str, code([100], 49));
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}
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/**
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* Set background color to bright red.
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* @param str text to make its background bright-red
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*/
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export function bgBrightRed(str: string): string {
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return run(str, code([101], 49));
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}
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/**
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* Set background color to bright green.
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* @param str text to make its background bright-green
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*/
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export function bgBrightGreen(str: string): string {
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return run(str, code([102], 49));
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}
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/**
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* Set background color to bright yellow.
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* @param str text to make its background bright-yellow
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*/
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export function bgBrightYellow(str: string): string {
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return run(str, code([103], 49));
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}
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/**
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* Set background color to bright blue.
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* @param str text to make its background bright-blue
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*/
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export function bgBrightBlue(str: string): string {
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return run(str, code([104], 49));
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}
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/**
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* Set background color to bright magenta.
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* @param str text to make its background bright-magenta
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*/
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export function bgBrightMagenta(str: string): string {
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return run(str, code([105], 49));
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}
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/**
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* Set background color to bright cyan.
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* @param str text to make its background bright-cyan
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*/
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export function bgBrightCyan(str: string): string {
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return run(str, code([106], 49));
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}
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/**
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* Set background color to bright white.
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* @param str text to make its background bright-white
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*/
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export function bgBrightWhite(str: string): string {
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return run(str, code([107], 49));
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}
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/* Special Color Sequences */
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/**
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* Clam and truncate color codes
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* @param n
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* @param max number to truncate to
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* @param min number to truncate from
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*/
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function clampAndTruncate(n: number, max = 255, min = 0): number {
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return Math.trunc(Math.max(Math.min(n, max), min));
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}
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/**
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* Set text color using paletted 8bit colors.
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* https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit
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* @param str text color to apply paletted 8bit colors to
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* @param color code
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*/
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export function rgb8(str: string, color: number): string {
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return run(str, code([38, 5, clampAndTruncate(color)], 39));
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}
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/**
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* Set background color using paletted 8bit colors.
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* https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit
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* @param str text color to apply paletted 8bit background colors to
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* @param color code
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*/
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export function bgRgb8(str: string, color: number): string {
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return run(str, code([48, 5, clampAndTruncate(color)], 49));
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}
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/**
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* Set text color using 24bit rgb.
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* `color` can be a number in range `0x000000` to `0xffffff` or
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* an `Rgb`.
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*
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* To produce the color magenta:
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*
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* rgb24("foo", 0xff00ff);
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* rgb24("foo", {r: 255, g: 0, b: 255});
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* @param str text color to apply 24bit rgb to
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* @param color code
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*/
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export function rgb24(str: string, color: number | Rgb): string {
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if (typeof color === "number") {
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return run(
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str,
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code(
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[38, 2, (color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff],
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39,
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),
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);
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}
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return run(
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str,
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code(
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[
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38,
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2,
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clampAndTruncate(color.r),
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clampAndTruncate(color.g),
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clampAndTruncate(color.b),
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],
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39,
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),
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);
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}
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/**
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* Set background color using 24bit rgb.
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* `color` can be a number in range `0x000000` to `0xffffff` or
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* an `Rgb`.
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*
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* To produce the color magenta:
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*
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* bgRgb24("foo", 0xff00ff);
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* bgRgb24("foo", {r: 255, g: 0, b: 255});
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* @param str text color to apply 24bit rgb to
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* @param color code
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*/
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export function bgRgb24(str: string, color: number | Rgb): string {
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if (typeof color === "number") {
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return run(
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str,
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code(
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[48, 2, (color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff],
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49,
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),
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);
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}
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return run(
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str,
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code(
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[
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48,
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2,
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clampAndTruncate(color.r),
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clampAndTruncate(color.g),
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clampAndTruncate(color.b),
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],
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49,
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),
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);
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}
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// https://github.com/chalk/ansi-regex/blob/2b56fb0c7a07108e5b54241e8faec160d393aedb/index.js
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const ANSI_PATTERN = new RegExp(
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[
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"[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:[a-zA-Z\\d]*(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\\u0007)",
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"(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-ntqry=><~]))",
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].join("|"),
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"g",
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);
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/**
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* Remove ANSI escape codes from the string.
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* @param string to remove ANSI escape codes from
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*/
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export function stripColor(string: string): string {
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return string.replace(ANSI_PATTERN, "");
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}
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