SPFx 1.19.0 - Error during bundle says [object Object] instead of displaying a clear message

[Rafaelki]

Target SharePoint environment

SharePoint Online

What SharePoint development model, framework, SDK or API is this about?

💥 SharePoint Framework

Developer environment

Windows

What browser(s) / client(s) have you tested

• 💥 Internet Explorer
• 💥 Microsoft Edge
• 💥 Google Chrome
• 💥 FireFox
• 💥 Safari
• mobile (iOS/iPadOS)
• mobile (Android)
• not applicable
• other (enter in the "Additional environment details" area below)

Additional environment details

• SPFx version: 1.19
• Node.js version: 18.20

Describe the bug / error

Related to #9675 as @AJIXuMuK asked to open a separated issue.

Errors during bundle say [object Object] as opposed to display the error message.

Note that the errors were displaying correctly in SPFx 1.18

Steps to reproduce

1. Get SPFx 1.19 using yeoman
2. Remove the assets folder to force an error during bundle
3. Run gulp clean
4. Run gulp bundle --ship
5. Note the messages in the terminal

Expected behavior

The error messages should be as descriptive as possible.

[michaelmaillot]

Hello,

FYI I tried to bundle a project with @microsoft/sp-build-web version 1.20.2 (released two days ago) and Webpack errors are now displayed correctly.

with @microsoft/[email protected]:

with @microsoft/[email protected]:

Can you confirm that it's ok on your side after updating the package version?

[Rafaelki]

Thanks @michaelmaillot , I can confirm @microsoft/[email protected] is displaying errors

[AJIXuMuK]

SPFx 1.20.0 also comes with the fix.

https://learn.microsoft.com/en-us/sharepoint/dev/spfx/release-1.20#fix-for-objectobject-issue