Fix compilation error in src/backend/image.ts that blob can be null

[superkelvint]

Compilation error was:

src/backend/image.ts:31:56 - error TS2345: Argument of type 'Blob | null' is not assignable to parameter of type 'Blob | MediaSource'.
  Type 'null' is not assignable to type 'Blob | MediaSource'.

31      canvas.toBlob(blob => resolve(URL.createObjectURL(blob)), "image/png");
                                                          ~~~~


Found 1 error in src/backend/image.ts:31

[ondras]

Hi @superkelvint ,

thanks for the PR. Are you aware of a particular situation where the toBlob fails to export the canvas? As far as I know, this would only happen with unsupported image format (and based on my experiments, browser just simply coerce to image/png instead).

[superkelvint]

No I'm not. I just had to make this change in order to build. Not sure why. Anyway, thank you so much for this wonderful library/application. I love the keyboard shortcuts and how everything is designed.

…

On Mon, Jun 10, 2024, 04:26 Ondřej Žára ***@***.***> wrote: Hi @superkelvint <https://github.com/superkelvint> , thanks for the PR. Are you aware of a particular situation where the toBlob fails to export the canvas? As far as I know, this would only happen with unsupported image format (and based on my experiments, browser just simply coerce to image/png instead). — Reply to this email directly, view it on GitHub <#180 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAFBLXMCENBLDEYAG23WO33ZGWEMRAVCNFSM6AAAAABI5CNPE6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCNJYGA4DEMBTG4> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[ondras]

Well, if we think that there is no reason for toBlob to fail, then a simpler build fix would be something similar to

URL.createObjectURL(blob!)