viewmd.js

#!/usr/bin/env node

const { program } = require('commander');
const { viewMarkdown } = require('./index.js');
const fs = require('fs');
const path = require('path');

program
  .name('viewmd')
  .description('View markdown files with GitHub-flavored markdown and Mermaid support')
  .version('1.0.0')
  .argument('<files...>', 'markdown files to view')
  .option('-p, --port <number>', 'specific port to use', parseInt)
  .option('--no-open', 'don\'t automatically open browser')
  .option('-k, --keep-alive', 'keep server running after browser closes')
  .option('-s, --snapshot', 'render once without watching for changes')
  .action(async (files, options) => {
    try {
      const filePaths = [];
      
      for (const file of files) {
        const filePath = path.resolve(file);
        
        if (!fs.existsSync(filePath)) {
          console.error(`Error: File not found: ${file}`);
          process.exit(1);
        }
        
        const stats = fs.statSync(filePath);
        if (!stats.isFile()) {
          console.error(`Error: Not a file: ${file}`);
          process.exit(1);
        }
        
        filePaths.push(filePath);
      }
      
      // Set watch to true by default unless snapshot mode is requested
      const viewOptions = {
        ...options,
        watch: !options.snapshot
      };
      
      await viewMarkdown(filePaths, viewOptions);
    } catch (error) {
      console.error('Error:', error.message);
      process.exit(1);
    }
  });

program.parse();