Cannot read property 'bitmap' of undefined

[svengau]

Hello, I'm using gatsby-plugin-sharp, and I've got the following error message when generating thumbnails:

TypeError: Cannot read property 'bitmap' of undefined
    at Potrace._processLoadedImage (/Users/svengaubert/workspace/fullstackrocket/gatsby-stripe-netlify-cms-tailwindcss/node_modules/potrace/lib/Potrace.js:1002:35)
    at Jimp.<anonymous> (/Users/svengaubert/workspace/fullstackrocket/gatsby-stripe-netlify-cms-tailwindcss/node_modules/potrace/lib/Potrace.js:1050:14)
    at Timeout._onTimeout (/Users/svengaubert/workspace/fullstackrocket/gatsby-stripe-netlify-cms-tailwindcss/node_modules/@jimp/core/dist/index.js:354:25)
Error: Unsupported MIME type: image/webp

After some investigations, it seems JIMP doesn't support webp and sends back the error "Error: Unsupported MIME type: image/webp". But potrace doesn't check this error, and directly pass a null image to _processLoadedImage, as we can see here:

node-potrace/lib/Potrace.js

Line 1048 in e1a3d0c

self._processLoadedImage(img);

Would it be possible to check the error before calling _processLoadedImage ?

Thanks

[tooolbox]

I see the problem you're describing and I don't see why it shouldn't be fixed.. Do you feel up to submitting a PR?

[mnlfischer]

is this repo still maintained?

[tooolbox]

I don't really have time to maintain this, hence me asking for a PR. Would be open to adding maintainers who have a vested interest in its survival, perhaps the gatsby folks.