1. /**
  2. * Compacts an array of arrays into a single array.
  3. * Useful for quick prototyping and reducing output verbosity.
  4. * @param {Array<Array<any>>} arr2d The 2D array to compact.
  5. * @returns {Array<any>} A flattened array.
  6. */
  7. function compactArrays(arr2d) {
  8. // Use reduce to flatten the array.
  9. return arr2d.reduce((acc, curr) => acc.concat(curr), []);
  10. }
  12. /**
  13. * Compacts an array of arrays of numbers into a single array of numbers.
  14. * @param {Array<Array<number>>} arr2d The 2D array to compact.
  15. * @returns {Array<number>} A flattened array of numbers.
  16. */
  17. function compactArraysNumbers(arr2d) {
  18. return arr2d.reduce((acc, curr) => acc.concat(curr), []);
  19. }
  21. /**
  22. * Compacts an array of arrays of strings into a single array of strings.
  23. * @param {Array<Array<string>>} arr2d The 2D array to compact.
  24. * @returns {Array<string>} A flattened array of strings.
  25. */
  26. function compactArraysStrings(arr2d) {
  27. return arr2d.reduce((acc, curr) => acc.concat(curr), []);
  28. }

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