list from

Front-End Engineer @ Meta (Facebook)

1. implement curry()

2. implement curry() with placeholder support

3. implement Array.prototype.flat()

4. implement basic throttle()

6. implement basic debounce()

9. decode message

10. first bad version

14. Implement a general memoization function - `memo()`

15. implement a simple DOM wrapper to support method chaining like jQuery

16. create an Event Emitter

17. Create a simple store for DOM element

18. Improve a function

19. find corresponding node in two identical DOM tree

25. Reorder array with new indexes

28. implement clearAllTimeout()

57. create an Observable

58. get DOM tree height

68. get DOM tags

89. Next Right Sibling

91. invert a binary tree

103. implement Math.sqrt()

104. Traverse DOM level by level

110. serialize and deserialize binary tree

113. Virtual DOM I

118. Virtual DOM II - createElement

121. A number sequence

133. roman numerals to integer

154. Two-way binding

161. toBe() or not.toBe()

163. integer to roman numerals