Browser Usage Example

YouTube.js works in the browser!

Usage

To use YouTube.js in the browser you must proxy requests through your own server. You can see our simple reference implementation in Deno in examples/browser/proxy/deno.ts.

We'll use our own fetch implementation to proxy requests through our server. This is a simple example, but you can use any fetch implementation you want.

import { Innertube } from "youtubei.js/web.bundle.min";

const yt = await Innertube.create({
    fetch: async (input, init) => {
        // url
        const url = typeof input === 'string'
            ? new URL(input)
            : input instanceof URL
            ? input
            : new URL(input.url);

        // transform the url for use with our proxy
        url.searchParams.set('__host', url.host);
        url.host = 'localhost:8080';
        url.protocol = 'http';

        const headers = init?.headers
            ? new Headers(init.headers)
            : input instanceof Request
            ? input.headers
            : new Headers();

        // now serialize the headers
        url.searchParams.set('__headers', JSON.stringify([...headers]));

        // copy over the request
        const request = new Request(
            url,
            input instanceof Request ? input : undefined,
        );

        headers.delete('user-agent');

        // fetch the url
        return fetch(request, init ? {
            ...init,
            headers
        } : {
            headers
        });
    },
    cache: new UniversalCache(),
});

After that, you can use the library as normal.

Example

We've got a full example in examples/browser/web using vite.