1. #!/usr/bin/env node
  3. const { program } = require('commander');
  4. const fs = require('fs');
  5. const { spawn } = require('child_process');
  7. program
  8. .version('1.0.0')
  9. .description('Streams DOM element data for CLI exploration.');
  11. program
  12. .command('stream <selector>')
  13. .description('Streams data for elements matching the selector.')
  14. .option('-n, --lines <n>', 'Number of lines to stream', '10')
  15. .action((selector, options) => {
  16. const lines = parseInt(options.lines, 10);
  17. if (isNaN(lines) || lines <= 0) {
  18. console.error('Invalid number of lines. Must be a positive integer.');
  19. process.exit(1);
  20. }
  22. const command = `puppeteer-playwright --headless --timeout 30000 --selector "${selector}" --limit ${lines} --output json`; // Using puppeteer-playwright for robust DOM traversal
  23. console.log(`Executing: ${command}`);
  25. const process = spawn(command, { shell: true });
  27. let data = '';
  28. process.stdout.on('data', (chunk) => {
  29. data += chunk.toString();
  30. });
  32. process.stderr.on('data', (chunk) => {
  33. console.error(`stderr: ${chunk}`);
  34. });
  36. process.on('close', (code) => {
  37. if (code === 0) {
  38. try {
  39. const parsedData = JSON.parse(data);
  40. console.log(JSON.stringify(parsedData, null, 2)); // Pretty print JSON
  41. } catch (error) {
  42. console.error('Error parsing JSON:', error);
  43. console.error('Raw output: ', data);
  44. }
  45. } else {
  46. console.error(`Command exited with code ${code}`);
  47. }
  48. });
  49. });
  51. program.parse(process.argv);

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