Hello ..
I'm bataino 4 years experience in software JavaScript Development.
I'm a little bit confused about the project's description. If the aim is to increase website speed, there are many ways we could achieve that like minimization, obfuscation, modularization, using more Asynchronous functions e.t.c
However if what you meant is to convert to ECMAScript from ES6, that would also affect the speed but that would be a different approach.
Kindly message me and I could be cleared of the project's description.
Hopefully I could be the winning bid and I get to display my honed skills.
Thank you for viewing my bid,
regards, Bataino.