deep-compare-strict.js 975 B

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  1. export function deepCompareStrict(a, b) {
  2. const typeofa = typeof a;
  3. if (typeofa !== typeof b) {
  4. return false;
  5. }
  6. if (Array.isArray(a)) {
  7. if (!Array.isArray(b)) {
  8. return false;
  9. }
  10. const length = a.length;
  11. if (length !== b.length) {
  12. return false;
  13. }
  14. for (let i = 0; i < length; i++) {
  15. if (!deepCompareStrict(a[i], b[i])) {
  16. return false;
  17. }
  18. }
  19. return true;
  20. }
  21. if (typeofa === 'object') {
  22. if (!a || !b) {
  23. return a === b;
  24. }
  25. const aKeys = Object.keys(a);
  26. const bKeys = Object.keys(b);
  27. const length = aKeys.length;
  28. if (length !== bKeys.length) {
  29. return false;
  30. }
  31. for (const k of aKeys) {
  32. if (!deepCompareStrict(a[k], b[k])) {
  33. return false;
  34. }
  35. }
  36. return true;
  37. }
  38. return a === b;
  39. }