Just piping in briefly here to note that Iâve not forgotten Fluent, and do intend to update fluent-compiler soonish to match the recent updates. Iâve been a bit involved with the v3 update to messageformat and other things recently, but the stack of tasks thatâs above Fluent work for me is getting rather small.
And yes, the compiler is rather intentionally producing modern JS. Its output is meant to be transpiled if necessary for IE11 & other environments.