#!/usr/bin/env node /** * Detect and fix bare curly braces in MDX/MD files that cause Mintlify acorn parse errors. * * In MDX, any { outside a code span or fenced code block is parsed as a JSX expression. * Non-JavaScript content (e.g. raw JSON) makes acorn fail with "Could not parse expression". * * Two patterns are handled: * * 1. Standalone JSON block — { is alone on a line, followed by JSON content: * * { ```json * "key": "value" → { * } "key": "value" * } * ``` * * 2. Inline bare brace — { appears inside prose or an HTML element: * * {"value":"..."} → {"value":"..."} * * Only braces that look like JSON (i.e. { followed by a quoted key with a colon) * are auto-escaped. Unambiguous JSX like {variable} or {/* comment *\/} are * reported as WARN but never auto-fixed. * * Usage: * node scripts/fix_mdx_braces.js # check — report only, exit 1 if issues * node scripts/fix_mdx_braces.js --fix # fix in-place * node scripts/fix_mdx_braces.js reference/reports/reports-fields.mdx * node scripts/fix_mdx_braces.js --fix reference/ */ const fs = require('fs'); const path = require('path'); // Matches fenced code blocks: plain (```), indented, or inside list items (* ```) const FENCE_RE = /^[\s*\->]*```/; // Matches { followed by a JSON string-key pattern const JSON_OPEN_RE = /\{\s*"[^"]+"\s*:/g; const SKIP_DIRS = new Set(['node_modules', '.git', '.mintlify', '__pycache__']); // --------------------------------------------------------------------------- // Helpers // --------------------------------------------------------------------------- function isInInlineCode(line, pos) { let depth = 0; for (let i = 0; i < pos; i++) { if (line[i] === '`') depth++; } return depth % 2 === 1; } function findMatchingClose(text, openPos) { let depth = 0; for (let i = openPos; i < text.length; i++) { if (text[i] === '{') depth++; else if (text[i] === '}') { depth--; if (depth === 0) return i; } } return -1; } function escapeJsonBracesInLine(line) { const toReplace = new Set(); const re = new RegExp(JSON_OPEN_RE.source, 'g'); let m; while ((m = re.exec(line)) !== null) { const start = m.index; if (isInInlineCode(line, start)) continue; if (line.slice(start, start + 7) === '{') continue; const close = findMatchingClose(line, start); if (close === -1) continue; toReplace.add(start); toReplace.add(close); } if (toReplace.size === 0) return line; let out = ''; for (let i = 0; i < line.length; i++) { if (toReplace.has(i)) { out += line[i] === '{' ? '{' : '}'; } else { out += line[i]; } } return out; } function hasBareBrace(line) { for (let i = 0; i < line.length; i++) { if (line[i] === '{' && !line.slice(i, i + 7).startsWith('{') && !isInInlineCode(line, i)) { return true; } } return false; } // --------------------------------------------------------------------------- // Block-level detection // --------------------------------------------------------------------------- function isStandaloneJsonOpen(lines, i) { if (lines[i].trim() !== '{') return false; for (let j = i + 1; j < Math.min(i + 8, lines.length); j++) { const nxt = lines[j].trim(); if (nxt) { return /^"[\w_ -]+":\s/.test(nxt) || ['{', '}', '[', ']'].includes(nxt); } } return false; } function findBlockEnd(lines, start) { let depth = 0; for (let i = start; i < lines.length; i++) { for (const ch of lines[i]) { if (ch === '{') depth++; else if (ch === '}') { depth--; if (depth === 0) return i; } } } return start; } function cleanJsonBlock(rawLines) { return rawLines .map(l => l.replace(/\\_/g, '_').replace(/\\\[/g, '[').replace(/\\\]/g, ']').trimEnd()) .filter(l => l.trim() !== ''); } // --------------------------------------------------------------------------- // File processor // --------------------------------------------------------------------------- function processFile(filepath, fix = false) { const text = fs.readFileSync(filepath, 'utf8'); const lines = text.split('\n').map(l => l + '\n'); // Handle files that don't end with newline if (lines.length > 0 && lines[lines.length - 1] === '\n' && !text.endsWith('\n')) { lines[lines.length - 1] = lines[lines.length - 1].slice(0, -1); } const issues = []; const newLines = [...lines]; let inFence = false; let offset = 0; let i = 0; while (i < lines.length) { const raw = lines[i]; const bare = raw.replace(/\n$/, ''); // Fenced code block toggle if (FENCE_RE.test(bare)) { inFence = !inFence; i++; continue; } if (inFence) { i++; continue; } // Standalone JSON block if (isStandaloneJsonOpen(lines, i)) { const end = findBlockEnd(lines, i); const rawBlock = lines.slice(i, end + 1).map(l => l.replace(/\n$/, '')); const cleaned = cleanJsonBlock(rawBlock); issues.push({ lineno: i + 1, kind: 'block', desc: `standalone JSON block lines ${i + 1}–${end + 1}` }); if (fix) { const replacement = ['```json\n', ...cleaned.map(l => l + '\n'), '```\n']; newLines.splice(i + offset, end - i + 1, ...replacement); offset += replacement.length - (end - i + 1); } i = end + 1; continue; } // Inline bare brace if (bare.includes('{')) { const re = new RegExp(JSON_OPEN_RE.source, 'g'); const hasJsonBrace = [...bare.matchAll(re)].some(m => !isInInlineCode(bare, m.index)); const hasAnyBare = hasBareBrace(bare); if (hasJsonBrace) { issues.push({ lineno: i + 1, kind: 'inline', desc: `inline JSON brace: ${bare.trim().slice(0, 80)}` }); if (fix) { newLines[i + offset] = escapeJsonBracesInLine(raw); } } else if (hasAnyBare) { issues.push({ lineno: i + 1, kind: 'inline-ambiguous', desc: `possible JSX expression (not auto-fixed): ${bare.trim().slice(0, 80)}` }); } } i++; } if (fix && issues.length > 0) { fs.writeFileSync(filepath, newLines.join(''), 'utf8'); } return issues; } // --------------------------------------------------------------------------- // File collection // --------------------------------------------------------------------------- function collectFiles(inputPaths) { const results = []; function walk(dir) { for (const entry of fs.readdirSync(dir, { withFileTypes: true })) { if (SKIP_DIRS.has(entry.name)) continue; const full = path.join(dir, entry.name); if (entry.isDirectory()) { walk(full); } else if (/\.(md|mdx)$/.test(entry.name)) { results.push(full); } } } for (const p of inputPaths) { if (!fs.existsSync(p)) { console.error(`warning: '${p}' does not exist, skipping`); continue; } const stat = fs.statSync(p); if (stat.isFile()) { results.push(p); } else if (stat.isDirectory()) { walk(p); } } return results; } // --------------------------------------------------------------------------- // CLI // --------------------------------------------------------------------------- function main() { const argv = process.argv.slice(2); const fix = argv.includes('--fix'); const paths = argv.filter(a => a !== '--fix'); if (paths.length === 0) paths.push('.'); const files = collectFiles(paths); if (files.length === 0) { console.log('No .md or .mdx files found.'); process.exit(0); } let total = 0; let affected = 0; for (const filepath of files.sort()) { const issues = processFile(filepath, fix); if (issues.length === 0) continue; affected++; for (const { lineno, kind, desc } of issues) { total++; const tag = kind === 'inline-ambiguous' ? 'WARN ' : fix ? 'FIXED' : 'ISSUE'; console.log(`[${tag}] ${filepath}:${lineno} — ${desc}`); } } console.log(''); if (total === 0) { console.log('No issues found.'); process.exit(0); } const verb = fix ? 'Fixed' : 'Found'; console.log(`${verb} ${total} issue(s) across ${affected} file(s).`); process.exit(fix ? 0 : 1); } main();

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