Ryan Schie

I wonder if, instead of doing an actual import, you could do a [TS reference](https://www.typescriptlang.org/docs/handbook/triple-slash-directives.html#-reference-types-) of the `svelte2tsx` library at the top? ```diff - import 'svelte2tsx/svelte-jsx'; + /// ``` You...

I was getting this as well and found it was due to the Puppeteer version using Chrome 78.0 and our build target was only to the last 1 Chrome version...

I was getting this error as well and found it was due to the use of optional chaining in our apps and building to targets of `last 1 Chrome versions`....