Add features from Auto

commands/code/lint.js

@@ -0,0 +1,50 @@
+const Command = require('../../structures/Command');
+const { Linter } = require('eslint');
+const linter = new Linter();
+const { stripIndents } = require('common-tags');
+const { trimArray } = require('../../util/Util');
+const { goodMessages, badMessages, defaultConfig } = require('../../assets/json/lint');
+
+module.exports = class LintCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'lint',
+			aliases: ['eslint'],
+			group: 'code',
+			memberName: 'lint',
+			description: 'Lints code using ESLint.',
+			clientPermissions: ['READ_MESSAGE_HISTORY'],
+			args: [
+				{
+					key: 'code',
+					prompt: 'What code do you want to lint?',
+					type: 'code'
+				}
+			]
+		});
+	}
+
+	async run(msg, { code }) {
+		if (!code.lang || ['js', 'javascript'].includes(code.lang)) {
+			const errors = linter.verify(code.code, defaultConfig);
+			if (!errors.length) return msg.reply(goodMessages[Math.floor(Math.random() * goodMessages.length)]);
+			const errorMap = trimArray(errors.map(err => `\`[${err.line}:${err.column}] ${err.message}\``));
+			return msg.reply(stripIndents`
+				${badMessages[Math.floor(Math.random() * badMessages.length)]}
+				${errorMap.join('\n')}
+			`);
+		}
+		if (code.lang === 'json') {
+			try {
+				JSON.parse(code.code);
+				return msg.reply(goodMessages[Math.floor(Math.random() * goodMessages.length)]);
+			} catch (err) {
+				return msg.reply(stripIndents`
+					${badMessages[Math.floor(Math.random() * badMessages.length)]}
+					\`${err.name}: ${err.message}\`
+				`);
+			}
+		}
+		return msg.reply('I don\'t know how to lint that language.');
+	}
+};