how do I escape backticks when executing raw JS in KotlinJS kotlinlang #javascript

how do I escape backticks when executing raw JS in...

janvladimirmostert

02/11/2025, 8:48 PM

how do I escape backticks when executing raw JS in KotlinJS? Example, this doesn't compile:

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js("""{ console.log(`test`) }""")

putting the backtick in a val also fails to compile

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val bt: Char = '`'
	js("""{ console.log(${bt}test${bt}) }""")

even though

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console.log(`test`)

is perfectly valid in the browser console.

Edoardo Luppi

02/11/2025, 8:56 PM

Template literals are an ES6 feature. The parser used by

js("...")

is ES5 compliant.

janvladimirmostert

02/11/2025, 8:58 PM

mmm, that would make sense so this is then probably being ignored in my case

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js(IR) {
		binaries.executable()
		useEsModules()

		compilerOptions {
			target = "es2015"
			useEsClasses = true
		}

Edoardo Luppi

02/11/2025, 8:59 PM

I recall discussing about the

js

validation a while back. Slack sucks at searching stuff damn. But yes, ES2015 there is not valid for that function unfortunately.

janvladimirmostert

02/11/2025, 9:05 PM

linking this here for completeness sake had no idea validation was being done on the content of

js(...)

Edoardo Luppi

02/11/2025, 9:44 PM

Small correction, Rhino 1.5R3 supports ES3, not ES5.

Edoardo Luppi

02/11/2025, 10:14 PM

Artem Kobzar

02/12/2025, 7:20 AM

It's true, however, we are going to rework the parser to support all the modern features.

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