transformRequest does not work with SSR

[willopez]

Issue: Bug

Platform:
Web

Description:
I am using ReactiveSearch web, with Next.JS. Attempting to implement SSR with transformRequest provided in settings like so:

const settings = {
  app: ...,
  transformRequest: (request) => { console.log("transformRequest"); return request; },
  url: ...
};

The provided transform function does not get executed on the server. Looking at this line: https://github.com/appbaseio/reactivesearch/blob/dev/packages/web/src/server/index.js#L271

It's obvious that the transform function provided in settings is ignored.

Can SSR support for transformRequest be added?

[willopez]

@metagrover Please checkout my proposed implementation

[metagrover]

Thank you for the contribution. We will roll this out in the upcoming release 🎉