libp2p-in-the-browser and in svelte

1. Start js-libp2p-webrtc-star server. Just run npm run star-signal -- --port 3000 --host localhost

   (or use the bootstrap at libp2p/js-libp2p-examples)

2. Start me. Just run npm run start:dev

HOW

Copy-paste most things from: https://github.com/libp2p/js-libp2p/tree/master/examples/libp2p-in-the-browser

$ # needed coz some libp2p library imports a json file
$ npm install @rollup/plugin-json --save-dev
$ # go edit rollup.config.json to add the json() plugin

$ # needed coz some libp2p library uses 'buffer' import
$ npm install rollup-plugin-node-polyfills --save-dev
$ # go edit rollup.config.json to add the nodePolyfills plugin

$ # needed coz libp2p says so. damn.
$ npm install rollup-plugin-node-builtins rollup-plugin-node-globals --save-dev
$ # rollup-plugin-node-polyfills seems more updated but it blows up the compile :P

ref: https://github.com/nodejs/readable-stream/issues/348

BLOCKERS

this.once is not a function

f this error. i give up.