[!] (plugin svelte) TypeError: Cannot read property 'trim' of undefined

[DhyeyMoliya]

Describe the bug
When I auto format Svelte file in VS Code, it changes the spacings and structure of code a little bit. And when I build it gives this error
[!] (plugin svelte) TypeError: Cannot read property 'trim' of undefined

Logs

To Reproduce
The .svelte file before formatting (works perfectly) :

The .svelte file after formatting (gives build error) :

Expected behavior
It should work in both scenarios. Because the auto-formatting should not be a problem.

Stacktraces

Stack trace

bundles src/main.ts → public/build/bundle.js...
[!] (plugin svelte) TypeError: Cannot read property 'trim' of undefined
src/main/main.svelte
TypeError: Cannot read property 'trim' of undefined
    at Object.exports.getTagInfo (/Users/dhyeymoliya/Documents/developer/svelte-app/node_modules/svelte-preprocess/dist/modules/tagInfo.js:25:35)
    at /Users/dhyeymoliya/Documents/developer/svelte-app/node_modules/svelte-preprocess/dist/autoProcess.js:80:93
    at Object.transformMarkup (/Users/dhyeymoliya/Documents/developer/svelte-app/node_modules/svelte-preprocess/dist/modules/markup.js:25:45)
    at markup (/Users/dhyeymoliya/Documents/developer/svelte-app/node_modules/svelte-preprocess/dist/autoProcess.js:114:25)
    at preprocess (/Users/dhyeymoliya/Documents/developer/svelte-app/node_modules/svelte/src/compiler/preprocess/index.ts:86:27)
    at Object.transform (/Users/dhyeymoliya/Documents/developer/svelte-app/node_modules/rollup-plugin-svelte/index.js:221:26)
    at /Users/dhyeymoliya/Documents/developer/svelte-app/node_modules/rollup/dist/shared/rollup.js:18615:25

Information about your project:

• Your browser and the version: N/A

• Your operating system: OS X 10.15.6

• svelte-preprocess version : 4.0.0

• Project uses or Rollup

Additional context
I am using Preprocessor and distributing my .css, .js and .html files outside the .svelte file.

[DhyeyMoliya]

A temporary workaround for me at this moment is to use prettier-ignore.

[kaisermann]

Thanks! That was indeed an issue 😁 Self-closing tags weren't correctly handled. Fixed in v4.2.1 🎉