Can the 1.6 JS compiler read files generated with ...

# javascript

[mbonnin]

Can the 1.6 JS compiler read files generated with 1.7 and languageVersion=1.5?

[Big Chungus]

Should be, otherwise what's the point of having languageVersion?

[mbonnin]

There is some existence that it's not working: https://kotlinlang.slack.com/archives/C01A6KM1SBZ/p1662908867649779

[mbonnin]

Albeit I can't really investigate that issue as 1.6.10 doesn't work on M1.

[mbonnin]

wait, 1.6.20 works on M1 I can investigate

[mbonnin]

I know native doesn't honor languageVersion for an example

[mbonnin]

https://youtrack.jetbrains.com/issue/KT-42293/Native-provide-binary-compatibility-between-incremental-releases#focus=Comments-27-6371943.0-0

[mbonnin]

I opened a separate issue: https://youtrack.jetbrains.com/issue/KT-53973/JS-compiler-doesnt-honour-languageVersion

[hfhbd]

Isn't this "expected" with the new IR backend which is in Beta and has breaking changes between major releases?

[mbonnin]

Maybe? 🤷

[mbonnin]

In all cases, sounds like no symbol found isn't an appropriate error to return