Sveltekit - consume external REST api inside a component

Sure!

You can do a native fetch for any CRUD operations inside components.

Something similar like this:

let data;

const getData = async () => {
    const response = await fetch('https://your.endpoint/api/foo');
    if (response.headers.get('content-type')?.includes('application/json')) {
        const json = await response.json();
        return { response, json };
    } else {
        return { response };
    }
};

Then you can initialize whenever you want. E.g:

onMount(async ()=> {
    await getData();
})