1. /**
  2. * Throttles requests for text files to prevent overwhelming the server.
  3. *
  4. * @param {string} fileUrl The URL of the text file to request.
  5. * @param {number} delayMs The delay in milliseconds between requests.
  6. * @returns {Promise<string>} A promise that resolves with the file content.
  7. * @throws {Error} If the file request fails.
  8. */
  9. async function throttleTextFileRequest(fileUrl, delayMs) {
  10. let lastRequestTime = 0;
  12. return new Promise((resolve, reject) => {
  13. const request = () => {
  14. const now = Date.now();
  15. const timeSinceLastRequest = now - lastRequestTime;
  17. if (timeSinceLastRequest < delayMs) {
  18. // Wait if the delay hasn't passed
  19. setTimeout(request, delayMs - timeSinceLastRequest);
  20. return;
  21. }
  23. lastRequestTime = now;
  25. fetch(fileUrl)
  26. .then(response => {
  27. if (!response.ok) {
  28. throw new Error(`HTTP error! Status: ${response.status}`);
  29. }
  30. return response.text(); // Get the file content as text
  31. })
  32. .then(data => {
  33. resolve(data); // Resolve the promise with the file content
  34. })
  35. .catch(error => {
  36. reject(error); // Reject the promise if there's an error
  37. });
  38. };
  40. request(); // Start the first request
  41. });
  42. }
  44. // Example usage:
  45. // throttleTextFileRequest('https://example.com/data.txt', 1000) // Throttle requests to 1 second

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