feat: update sizes attribute on image resize with new value

[felixranesberger]

🔗 Linked issue

fixes: #14

❓ Type of change

• 📖 Documentation (updates to the documentation, readme or JSDoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

When resizing the browser window, some image sizes may change.

Currently the sizes attribute of the image is not updated, when a resize occurs.
This pull request adds this feature to the library.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[netlify]

✅ Deploy Preview for unlazy ready!

Name	Link
🔨 Latest commit	f714a41
🔍 Latest deploy log	https://app.netlify.com/sites/unlazy/deploys/64b791df8069c5000888e6f2
😎 Deploy Preview	https://deploy-preview-15--unlazy.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[johannschopplich]

Hey there, thanks for providing a PR! Please have a look at my comments. 🙂

[johannschopplich]

Thanks for the updates. I'll a look at it later.

[johannschopplich]

Hey there! Thanks for the MR. I've introduced a global updateSizesOnResize option. It's false by default and required opt-in. This is just to keep breaking changes at minimum.
Does this still suit your use-case? 🙂

[felixranesberger]

Does this still suit your use-case? 🙂

Yeah, this works just fine ✌️

Have you seen the pagespeed / debounce review comment I added a few days ago?

[johannschopplich]

No, haven't seen that comment. Would you mind posting it again?

[felixranesberger]

[johannschopplich]

Ah, I see. You haven't posted our comment. It's till in pending state, I presume. :)

Edit: I think debounce is OK for now. For Lighthouse scores, the browser won't resize the window. At least that's the latest info I've got. We should be fine.