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'use strict';
const ANSI_BACKGROUND_OFFSET = 10;
const wrapAnsi256 = (offset = 0) => code => `\u001B[${38 + offset};5;${code}m`;
const wrapAnsi16m = (offset = 0) => (red, green, blue) => `\u001B[${38 + offset};2;${red};${green};${blue}m`;
function assembleStyles() {
const codes = new Map();
const styles = {
modifier: {
reset: [0, 0],
// 21 isn't widely supported and 22 does the same thing
bold: [1, 22],
dim: [2, 22],
italic: [3, 23],
underline: [4, 24],
overline: [53, 55],
inverse: [7, 27],
hidden: [8, 28],
strikethrough: [9, 29]
},
color: {
black: [30, 39],
red: [31, 39],
green: [32, 39],
yellow: [33, 39],
blue: [34, 39],
magenta: [35, 39],
cyan: [36, 39],
white: [37, 39],
// Bright color
blackBright: [90, 39],
redBright: [91, 39],
greenBright: [92, 39],
yellowBright: [93, 39],
blueBright: [94, 39],
magentaBright: [95, 39],
cyanBright: [96, 39],
whiteBright: [97, 39]
},
bgColor: {
bgBlack: [40, 49],
bgRed: [41, 49],
bgGreen: [42, 49],
bgYellow: [43, 49],
bgBlue: [44, 49],
bgMagenta: [45, 49],
bgCyan: [46, 49],
bgWhite: [47, 49],
// Bright color
bgBlackBright: [100, 49],
bgRedBright: [101, 49],
bgGreenBright: [102, 49],
bgYellowBright: [103, 49],
bgBlueBright: [104, 49],
bgMagentaBright: [105, 49],
bgCyanBright: [106, 49],
bgWhiteBright: [107, 49]
}
};
// Alias bright black as gray (and grey)
styles.color.gray = styles.color.blackBright;
styles.bgColor.bgGray = styles.bgColor.bgBlackBright;
styles.color.grey = styles.color.blackBright;
styles.bgColor.bgGrey = styles.bgColor.bgBlackBright;
for (const [groupName, group] of Object.entries(styles)) {
for (const [styleName, style] of Object.entries(group)) {
styles[styleName] = {
open: `\u001B[${style[0]}m`,
close: `\u001B[${style[1]}m`
};
group[styleName] = styles[styleName];
codes.set(style[0], style[1]);
}
Object.defineProperty(styles, groupName, {
value: group,
enumerable: false
});
}
Object.defineProperty(styles, 'codes', {
value: codes,
enumerable: false
});
styles.color.close = '\u001B[39m';
styles.bgColor.close = '\u001B[49m';
styles.color.ansi256 = wrapAnsi256();
styles.color.ansi16m = wrapAnsi16m();
styles.bgColor.ansi256 = wrapAnsi256(ANSI_BACKGROUND_OFFSET);
styles.bgColor.ansi16m = wrapAnsi16m(ANSI_BACKGROUND_OFFSET);
// From https://github.com/Qix-/color-convert/blob/3f0e0d4e92e235796ccb17f6e85c72094a651f49/conversions.js
Object.defineProperties(styles, {
rgbToAnsi256: {
value: (red, green, blue) => {
// We use the extended greyscale palette here, with the exception of
// black and white. normal palette only has 4 greyscale shades.
if (red === green && green === blue) {
if (red < 8) {
return 16;
}
if (red > 248) {
return 231;
}
return Math.round(((red - 8) / 247) * 24) + 232;
}
return 16 +
(36 * Math.round(red / 255 * 5)) +
(6 * Math.round(green / 255 * 5)) +
Math.round(blue / 255 * 5);
},
enumerable: false
},
hexToRgb: {
value: hex => {
const matches = /(?<colorString>[a-f\d]{6}|[a-f\d]{3})/i.exec(hex.toString(16));
if (!matches) {
return [0, 0, 0];
}
let {colorString} = matches.groups;
if (colorString.length === 3) {
colorString = colorString.split('').map(character => character + character).join('');
}
const integer = Number.parseInt(colorString, 16);
return [
(integer >> 16) & 0xFF,
(integer >> 8) & 0xFF,
integer & 0xFF
];
},
enumerable: false
},
hexToAnsi256: {
value: hex => styles.rgbToAnsi256(...styles.hexToRgb(hex)),
enumerable: false
}
});
return styles;
}
// Make the export immutable
Object.defineProperty(module, 'exports', {
enumerable: true,
get: assembleStyles
});
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