1. Array.prototype.find

    The `find()` method returns the value of the first item in the array based on the result of the provided testing function.

  2. Array.prototype.findIndex

    The `findIndex()` method returns the index of the first element in the array that satisfies the provided testing function.

  3. flat & flatMap array methods

    Methods to flatten any sub-arrays found in an array by concatenating their elements.

  4. Array.prototype.includes

    Determines whether or not an array includes the given value, returning a boolean value (unlike `indexOf`).

  5. Shared Array Buffer

    Type of ArrayBuffer that can be shared across Workers.

  6. Typed Arrays

    JavaScript typed arrays provide a mechanism for accessing raw binary data much more efficiently. Includes: `Int8Array`, `Uint8Array`, `Uint8ClampedArray`, `Int16Array`, `Uint16Array`, `Int32Array`, `Uint32Array`, `Float32Array` & `Float64Array`

  7. javascript built-in: array

  8. javascript built-in: arraybuffer

  9. javascript built-in: arraybuffer: isview

  10. javascript built-in: array: [symbol.iterator]

  11. javascript built-in: array: [symbol.unscopables]

  12. javascript built-in: array: at

  13. javascript built-in: array: concat

  14. javascript built-in: array: every

  15. javascript built-in: array: fill

  16. javascript built-in: array: filter

  17. javascript built-in: array: flat

  18. javascript built-in: array: from

  19. javascript built-in: array: fromasync

  20. javascript built-in: array: join

  21. javascript built-in: array: keys

  22. javascript built-in: array: length

  23. javascript built-in: array: map

  24. javascript built-in: array: of

  25. javascript built-in: array: pop

  26. javascript built-in: array: push

  27. javascript built-in: array: reduce

  28. javascript built-in: array: shift

  29. javascript built-in: array: slice

  30. javascript built-in: array: some

  31. javascript built-in: array: sort

  32. javascript built-in: array: splice

  33. javascript built-in: array: values

  34. javascript built-in: array: with

  35. grammar: array literals (`[1, 2, 3]`)