8 lines (7 loc) · 414 Bytes

Pool tasks

Optimize 4-bad.js, see TODOs in the file; check solution if 4-improved.js
Rewrite 4-improved.js to class syntax
Implement async instance acquisition in closure version with queue and callbacks
Implement async instance acquisition in classes version with queue and callbacks
Rewrite acquisition to promises in closure version
Rewrite acquisition to promises in classes version