markdownlint-mcp

import { Rule } from './rule-interface'; /** * MD022: Headings should be surrounded by blank lines * * This rule is triggered when headings (any style) are either not preceded or not followed by a blank line. * This is a common formatting convention that makes it easier to visually distinguish sections of a document. */ export const name = 'MD022'; export const description = 'Headings should be surrounded by blank lines'; /** * Fix headings by ensuring they have blank lines before and after * @param lines Array of string lines to fix * @returns Fixed lines array with blank lines added around headings */ export function fix(lines: string[]): string[] { const result: string[] = []; const isHeading = (line: string): boolean => /^#{1,6}(\s+|$)/.test(line); // Process lines one by one for (let i = 0; i < lines.length; i++) { const line = lines[i]; const isCurrentLineHeading = isHeading(line); // Check if we need to add a blank line before a heading if (isCurrentLineHeading && i > 0 && lines[i - 1].trim() !== '') { result.push(''); // Add blank line before heading } // Add the current line result.push(line); // Check if we need to add a blank line after a heading if (isCurrentLineHeading && i < lines.length - 1 && lines[i + 1].trim() !== '') { result.push(''); // Add blank line after heading } } return result; } /** * Rule implementation for MD022 */ export const rule: Rule = { name, description, fix }; export default rule;