1. /**
  2. * Cleans JSON data for validation.
  3. *
  4. * @param {object} data - The JSON data to clean.
  5. * @param {object} [config={}] - Optional configuration object.
  6. * @param {string[]} [config.requiredFields=[]] - Array of required fields.
  7. * @param {function} [config.validatorFunctions={}] - Object containing validator functions (e.g., email, number).
  8. * @returns {object|null} - The cleaned data, or null if validation fails.
  9. */
  10. function cleanData(data, config = {}) {
  11. if (typeof data !== 'object' || data === null) {
  12. console.warn("Data is not a valid object. Returning null.");
  13. return null;
  14. }
  16. const cleanedData = {};
  18. for (const key in data) {
  19. if (data.hasOwnProperty(key)) {
  20. const value = data[key];
  22. // Handle nested objects
  23. if (typeof value === 'object' && value !== null) {
  24. const nestedCleaned = cleanData(value, config);
  25. if (nestedCleaned === null) {
  26. return null; // Propagate validation failure
  27. }
  28. cleanedData[key] = nestedCleaned;
  29. continue;
  30. }
  32. // Handle required fields
  33. if (config.requiredFields && config.requiredFields.includes(key) && value === undefined) {
  34. console.warn(`Missing required field: ${key}. Returning null.`);
  35. return null;
  36. }
  38. //Handle validators
  39. if (config.validatorFunctions && config.validatorFunctions[key]) {
  40. const validator = config.validatorFunctions[key];
  41. const validatedValue = validator(value);
  42. if (validatedValue === false) {
  43. console.warn(`Validation failed for field: ${key}. Returning null.`);
  44. return null;
  45. }
  46. cleanedData[key] = validatedValue;
  47. continue;
  48. }
  50. cleanedData[key] = value;
  51. }
  52. }
  54. return cleanedData;
  55. }

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