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express-server/node_modules/boxen/index.js

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+'use strict';
+const stringWidth = require('string-width');
+const chalk = require('chalk');
+const widestLine = require('widest-line');
+const cliBoxes = require('cli-boxes');
+const camelCase = require('camelcase');
+const ansiAlign = require('ansi-align');
+const termSize = require('term-size');
+
+const getObject = detail => {
+	let obj;
+
+	if (typeof detail === 'number') {
+		obj = {
+			top: detail,
+			right: detail * 3,
+			bottom: detail,
+			left: detail * 3
+		};
+	} else {
+		obj = Object.assign({
+			top: 0,
+			right: 0,
+			bottom: 0,
+			left: 0
+		}, detail);
+	}
+
+	return obj;
+};
+
+const getBorderChars = borderStyle => {
+	const sides = [
+		'topLeft',
+		'topRight',
+		'bottomRight',
+		'bottomLeft',
+		'vertical',
+		'horizontal'
+	];
+
+	let chars;
+
+	if (typeof borderStyle === 'string') {
+		chars = cliBoxes[borderStyle];
+
+		if (!chars) {
+			throw new TypeError(`Invalid border style: ${borderStyle}`);
+		}
+	} else {
+		sides.forEach(key => {
+			if (!borderStyle[key] || typeof borderStyle[key] !== 'string') {
+				throw new TypeError(`Invalid border style: ${key}`);
+			}
+		});
+
+		chars = borderStyle;
+	}
+
+	return chars;
+};
+
+const getBackgroundColorName = x => camelCase('bg', x);
+
+module.exports = (text, opts) => {
+	opts = Object.assign({
+		padding: 0,
+		borderStyle: 'single',
+		dimBorder: false,
+		align: 'left',
+		float: 'left'
+	}, opts);
+
+	if (opts.backgroundColor) {
+		opts.backgroundColor = getBackgroundColorName(opts.backgroundColor);
+	}
+
+	if (opts.borderColor && !chalk[opts.borderColor]) {
+		throw new Error(`${opts.borderColor} is not a valid borderColor`);
+	}
+
+	if (opts.backgroundColor && !chalk[opts.backgroundColor]) {
+		throw new Error(`${opts.backgroundColor} is not a valid backgroundColor`);
+	}
+
+	const chars = getBorderChars(opts.borderStyle);
+	const padding = getObject(opts.padding);
+	const margin = getObject(opts.margin);
+
+	const colorizeBorder = x => {
+		const ret = opts.borderColor ? chalk[opts.borderColor](x) : x;
+		return opts.dimBorder ? chalk.dim(ret) : ret;
+	};
+
+	const colorizeContent = x => opts.backgroundColor ? chalk[opts.backgroundColor](x) : x;
+
+	text = ansiAlign(text, {align: opts.align});
+
+	const NL = '\n';
+	const PAD = ' ';
+
+	let lines = text.split(NL);
+
+	if (padding.top > 0) {
+		lines = Array(padding.top).fill('').concat(lines);
+	}
+
+	if (padding.bottom > 0) {
+		lines = lines.concat(Array(padding.bottom).fill(''));
+	}
+
+	const contentWidth = widestLine(text) + padding.left + padding.right;
+	const paddingLeft = PAD.repeat(padding.left);
+	const columns = termSize().columns;
+	let marginLeft = PAD.repeat(margin.left);
+
+	if (opts.float === 'center') {
+		const padWidth = Math.max((columns - contentWidth) / 2, 0);
+		marginLeft = PAD.repeat(padWidth);
+	} else if (opts.float === 'right') {
+		const padWidth = Math.max(columns - contentWidth - margin.right - 2, 0);
+		marginLeft = PAD.repeat(padWidth);
+	}
+
+	const horizontal = chars.horizontal.repeat(contentWidth);
+	const top = colorizeBorder(NL.repeat(margin.top) + marginLeft + chars.topLeft + horizontal + chars.topRight);
+	const bottom = colorizeBorder(marginLeft + chars.bottomLeft + horizontal + chars.bottomRight + NL.repeat(margin.bottom));
+	const side = colorizeBorder(chars.vertical);
+
+	const middle = lines.map(line => {
+		const paddingRight = PAD.repeat(contentWidth - stringWidth(line) - padding.left);
+		return marginLeft + side + colorizeContent(paddingLeft + line + paddingRight) + side;
+	}).join(NL);
+
+	return top + NL + middle + NL + bottom;
+};
+
+module.exports._borderStyles = cliBoxes;