1. /**
  2. * Removes duplicate datasets from an array.
  3. *
  4. * @param {Array<object>} datasets An array of datasets (objects).
  5. * @param {string} key The key to use for checking duplicates. Defaults to 'id'.
  6. * @returns {Array<object>} A new array with duplicates removed. Returns an empty array if input is invalid.
  7. */
  8. function removeDuplicateDatasets(datasets, key = 'id') {
  9. if (!Array.isArray(datasets)) {
  10. console.error("Invalid input: datasets must be an array.");
  11. return [];
  12. }
  14. if (datasets.length === 0) {
  15. return []; // Return empty array if input is empty.
  16. }
  18. if (typeof key !== 'string' || key.trim() === '') {
  19. console.error("Invalid input: key must be a non-empty string.");
  20. return [];
  21. }
  23. const seen = new Set();
  24. const result = [];
  26. for (const dataset of datasets) {
  27. if (typeof dataset !== 'object' || dataset === null) {
  28. console.warn("Skipping invalid dataset:", dataset);
  29. continue;
  30. }
  31. if (dataset.hasOwnProperty(key)) {
  32. const keyValue = dataset[key];
  33. if (!seen.has(keyValue)) {
  34. seen.add(keyValue);
  35. result.push(dataset);
  36. }
  37. } else {
  38. console.warn(`Dataset missing key '${key}':`, dataset);
  39. }
  40. }
  42. return result;
  43. }

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