Doesn't work in cloudflare workers

[Munter]

This library uses cross-fetch to polyfill fetch in the environments it runs in.

However, cross-fetch is not a proper polyfill. It replaces the native fetch with a polyfill based on XMLHttpRequest no whether fetch or XMLHttpRequest exist or not.

In Cloudflare workers you are limited to a web worker context, which has a very limited subset of javascript API available. In this environment you have fetch, but not XMLHttpRequest. So cross-fetch breaks the environment by clobbering the native fetch with a version that throws because XMLHttpRequest doesn't exist.

The same thing happens if I try to run the prismic client in a web worker or a serviceworker.

See also lquixada/cross-fetch#69

[lihbr]

Hey @Munter, thanks for opening an issue, that's an interesting one!

We'll have a look at it, in the meantime, I can suggest you having a look at ts-prismic which is a lower level Prismic client that allows you to pick your query library 🙂

cc @Duaner

[lihbr]

Hey @Munter, just letting you know we published @prismicio/client v6 in alpha, allowing you to provide your own fetcher function 🎉

While not documented yet the new kit has a very similar usage and comes with built-in tsdoc and an examples folder to already help you integrate with it ☺️

https://github.com/prismicio/prismic-javascript/tree/aa/v6/examples

https://github.com/prismicio/prismic-javascript/blob/3dfba0f4fb013421db58217cb02a810dab2b5fcc/src/client.ts#L145-L148

[lihbr]

Hey @Munter, I'm happy to announce we just released in beta @prismicio/client and @prismicio/helpers (the new prismic-dom). Stable release is scheduled for November!

@prismicio/client is now free of cross-fetch, you can even provide your own fetch implementation, so I figured out you'd be interested! You can read more about how to give them a try here, your feedback is also very much appreciated~

Cheers!

[lihbr]

Fixed in v6 🎉 Thank you for your contribution!

https://prismic.io/docs/technical-reference/prismicio-client?version=v6

If you're still experiencing the issue with the new kit, feel free to reopen!