The new JavaScript IR compiler is taking significantly longer to compile than the LEGACY version on ...

# multiplatform

[Mark Vogel]

The new JavaScript IR compiler is taking significantly longer to compile than the LEGACY version on multiplatform projects.
For example, on LEGACY, the compilation takes roughly 4-30 seconds depending on the changes made while on IR it nearly always takes 4+ minutes.

Has anyone encountered this when upgrading recently?

[andylamax]

I just recently migrated to kotlin 1.8.0 and I haven hit 1 minute compilation time. While doing TDD.

How ever we have a lot of submodules which does open up doors for parallel compilation, so maybe thats the benefit we are getting

[CLOVIS]

Either your project is massive, or there's something wrong with your setup... I use Kotlin/JS IR in multiple small–medium scale projects with continuous compilation and it rarely takes longer than 20 seconds

[Mark Vogel]

I'm thinking that there's possibly something wrong with the setup since it's not too large. What kind of thing could cause this kind of delay when switching compilers?

[Mark Vogel]

Every time it gets stuck on the compileKotlinJs task and sometimes kotlinNpmInstall . It only gets stuck when I'm set to IR. Could it be caused by the npm/wrapper dependencies?

Here are my Kotlin configuration (I can post more if needed):
https://pastebin.com/uTsCjHY8