What is the minimum supported Chrome version for Kobweb? Does it support ES5?

[damonliuchn]

What is the minimum supported Chrome version for Kobweb? Does it support ES5?

[bitspittle]

I'm not sure but it should be compatible going back several years at least. I think Kobweb exports es5 by default; you have to opt into es6. https://kotlinlang.org/docs/js-project-setup.html#support-for-es2015-features

[damonliuchn]

1. Full ES6 Modules support - First fully supported in Chrome 61 with import/export.
2. Stable async/await - Introduced in Chrome 55, more stable in version 61

Kobweb's output still contains ES6 syntax, such as => (arrow functions)." And after being packaged by webpack, umd is used instead of es6 import/export

Therefore, the minimum supported version might be Chrome 55, but it's recommended to start from version 61

[bitspittle]

According to official docs (https://kotlinlang.org/docs/js-overview.html), es5 should still be the default export target (Kobweb doesn't do anything to override this). If they somehow made a change that is actually producing es6 code, that might not be intentional.

I'll try to double check today and ping the team if I can see that.

[bitspittle]

I don't see what you're seeing...

Repro steps:

$ kobweb create app # press <enter> to accept all questions
$ cd app/site
$ kobweb export --layout static
$ cd ../build/js/packages/app/kotlin
$ grep -r "=>" . --include='*.js' # no results
$ grep -r "async" . --include='*.js' # no results

Can you tell me what you're seeing and what your repro steps are?