TypeError: unsupported file type: undefined (file: undefined) with what I think are valid SVG files

[dabeeeenster]

Test gist is here:

https://gist.github.com/dabeeeenster/004e82c3e344707751f294c16d5ddf50

Running this I get the following:

TypeError: unsupported file type: undefined (file: undefined)
    at lookup (/Users/ben/flagsmith/flagsmith/docs/node_modules/image-size/dist/index.js:42:11)
    at imageSize (/Users/ben/flagsmith/flagsmith/docs/node_modules/image-size/dist/index.js:98:16)
    at IncomingMessage.<anonymous> (/Users/ben/flagsmith/flagsmith/docs/test.js:17:19)
    at IncomingMessage.emit (node:events:526:35)
    at endReadableNT (node:internal/streams/readable:1408:12)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21)

Node.js v20.9.0

But I think the SVG file is fine?

[netroy]

The issue seems to be that the test regexp for SVGs is failing because of the long encoded content attribute in this file.
Stuff like this is why I wonder if I should simply drop SVG support, and recommend that people use a proper SVG/XML parser instead.
using regular expressions to parse SVGs is always going to be janky.
We have more test images for SVGs than any other format in this repo, and yet this continues to be a game of whack-a-mole.

[dabeeeenster]

Thanks for the info. I ended up running my svgs through https://github.com/svg/svgo and that cleared the warnings. The SVGs were originally exported from draw.io so I guess its doing something odd with the export. I guess this could be closed now?

[netroy]

let's leave this open for now.
also, thanks for reporting this 🙏🏽

[dabeeeenster]

👍

for completeness an svg that throws warnings is:

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293.5 Z" pointer-events="none"/><path fill="none" stroke="#000" stroke-miterlimit="10" d="M 360 326.37 L 360 415.03 L 296.37 415" pointer-events="none"/><path fill="#000" stroke="#000" stroke-miterlimit="10" d="M 360 321.12 L 363.5 328.12 L 360 326.37 L 356.5 328.12 Z" pointer-events="none"/><path fill="#000" stroke="#000" stroke-miterlimit="10" d="M 291.12 415 L 298.12 411.5 L 296.37 415 L 298.12 418.5 Z" pointer-events="none"/><rect width="120" height="60" x="300" y="260" fill="#fff2cc" stroke="#d6b656" pointer-events="none" rx="9" ry="9"/><g transform="translate(-0.5 -0.5)scale(0.9999999999999999)"><switch><foreignObject width="101%" height="101%" pointer-events="none" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow:visible;text-align:left"><div xmlns="http://www.w3.org/1999/xhtml" style="display:flex;align-items:unsafe center;justify-content:unsafe center;width:118px;height:1px;padding-top:290px;margin-left:301px"><div data-drawio-colors="color: rgb(0, 0, 0);" style="box-sizing:border-box;font-size:0;text-align:center"><div style="display:inline-block;font-size:12px;font-family:Helvetica;color:#000;line-height:1.2;pointer-events:none;white-space:normal;overflow-wrap:normal">Task Processor</div></div></div></foreignObject><text x="360" y="294" fill="#000" font-family="Helvetica" font-size="12" text-anchor="middle">Task Processor</text></switch></g></g><switch><a target="_blank" transform="translate(0,-5)" xlink:href="https://www.drawio.com/doc/faq/svg-export-text-problems"><text x="50%" y="100%" font-size="10" text-anchor="middle">Text is not SVG - cannot display</text></a></switch></svg>

[iPurpl3x]

I'm also experiencing this with draw.io SVGs. As I want to keep editing them, I won't be able to run them through svgo...

[Danielku15]

Same problem here: We're exporting SVGs from Draw.io and put it to our Docusaurus Docs. Rewriting them and optimizing them in the pipeline is quite an effort.

For a short term fix the SVG validation might be simply to check for .includes('<svg ').

The lib currently seems to do following:

1. Try to find a filetype using the validate methods of all registered types.
2. If found try to parse it fully and return the size via calculate on the detector.
3. If not found raise an error.

What if it would do following:

1. Loop all formats and do a tryCalculate() returning null/false.
2. Return the data for the first format which matches.
3. If none matches rais an error.

The benefits of this approach are:

• The formats where we have magic numbers can keep validating reliably at the start of tryCalculate.
• SVG could check first for <svg and if that's the case proceed with full parsing. It can still fail in this path in case matching was not successful and other formats might succeed.

[damageboy]

Experiencing the same issue with docusaurus, draw.io exported .svgs and image-size...