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Breaks watch mode on error when preprocess dependency transformation fails

See original GitHub issue

Describe the bug If preprocess fails execution of a dependency (eg: an external scss file imported within a <style> tag). The onLoad returning watchFiles are lost and editing the external scss does not trigger the rebuild.

To Reproduce Steps to reproduce the behavior:

Create a .svelte file with a <style lang="scss"> with an external import @import "./external-file.scss"; with valid syntax.
Start watch mode.
Edit external-file.scss with some invalid syntax.
Rebuild is triggered and fails.
Edit external-file.scss with valid syntax.
Rebuild is not triggered.

Expected behavior A clear and concise description of what you expected to happen.

Screenshots If applicable, add screenshots to help explain your problem.

Environment (please complete the following information):

esbuild-svelte version: 0.7.0
esbuild version: 0.14.42
Svelte preprocessors used (if any): SCSS

Issue Analytics

State:
Created a year ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

maxiruanicommented, Jun 1, 2022

I have created a PR ( #132 ). Let me know what you think! Thanks

1reaction

maxiruanicommented, May 31, 2022

Checking the code I thought in a solution to keep the previous build watchFiles based on the “invalidated” cachedFile.dependencies. Due to preprocess nature we can’t get the resolved dependencies by svelte-preprocess.

Another caveat I found is that if the external scss file has invalid syntax from the start, esbuild watch fails and exit the process, but I don’t figure it out how to fix that.

Let me know if you like this solution and I can try to implement it.

Thanks!

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