0.0.2 regression

[rounce]

for example:

<img src="https://godon.ru/kyh1009.png"/>
<img src="https://forumupload.ru/uploads/0019/3c/8c/46/376640.webp" /></p>
<script src="https://unpkg.com/webp-hero@0.0.2/dist-cjs/polyfills.js"></script>
<script src="https://unpkg.com/webp-hero@0.0.2/dist-cjs/webp-hero.bundle.js"></script>
<script>
        var webpMachine = new webpHero.WebpMachine();
        webpMachine.polyfillDocument();
</script>

don't work. v0.0.1 works just fine.

[chase-moskal]

@rounce thank you for this report, i will investigate this as soon as i can

[chase-moskal]

@rounce

okay, i've done a quick investigation into this issue.

the problem:
it appears that the new improvedWebpImageDetector function was failing. this new function uses a fetch calls (meant to target the cache) to obtain the mime type of each image, to accurately assess whether the image is a webp (ignoring the file extension) -- and the problem, is that this function was failing to fetch the mime types for these cross-origin image resources.

workaround solution:
we can specify to WebpMachine to instead use the older function defaultDetectWebpImage.

<img src="https://godon.ru/kyh1009.png"/>
<img src="https://forumupload.ru/uploads/0019/3c/8c/46/376640.webp" /></p>
<script src="https://unpkg.com/webp-hero@0.0.2/dist-cjs/polyfills.js"></script>
<script src="https://unpkg.com/webp-hero@0.0.2/dist-cjs/webp-hero.bundle.js"></script>
<script>
  var webpMachine = new webpHero.WebpMachine({

    // this setting should fix the issue
    detectWebpImage: webpHero.defaultDetectWebpImage,

    // this setting is for debugging and testing,
    // to force webpHero to convert webp's,
    // even when it's not necessary
    webpSupport: Promise.resolve(false),
  });
  webpMachine.polyfillDocument();
</script>

[rounce]

Thanks for the quick response. The workaround works

[chase-moskal]

🍻

i should also mention that the workaround operates by checking for ".webp" extensions, which means, using the workaround, all your webp images must end in the .webp extension