There are 2 repositories under zawgyi-unicode-translit-rules topic.
General purpose transliterate service for Angular which can be used in swapping letters such as α → a, ၎ → ၎င်း or Zawgyi-One to standard Myanmar Unicode.
Zawgyi Unicode transliterate / convert regular expression rules in JavaScript and JSON formats that can work with @DagonMetric / ng-translit package.