Is there an API for lemmy instances? at least something similar to /.json?

nevermind, i actually did it now 4 minutes after complaining because i saw there's code examples here:

https://github.com/LemmyNet/lemmy/blob/ecc9469a02e63eab4e19093007c7ba6db0dca079/api_tests/src/shared.ts#L4

this works:

import { GetPost, GetPostResponse, LemmyHttp, Login } from "lemmy-js-client";

export interface API {
  client: LemmyHttp;
  auth: string;
}

export let alpha: API = {
  client: new LemmyHttp("https://sh.itjust.works"),
  auth: "",
};

let formAlpha: Login = {
  username_or_email: "username",
  password: "password",
};

export async function getPost(
  api: API,
  post_id: number
): Promise<GetPostResponse> {
  let form: GetPost = {
    id: post_id,
    auth: api.auth,
  };
  return api.client.getPost(form);
}

getPost(alpha, 1).then((res) => {
  console.log(res);
});

been playing with it for like 20 minutes and it seems like the documentation and the code are different, so i can't implement any of what they say i can, been trying to just find the answers in the code with no luck cuz apparently the repo is all typescript and there's no code in the main repo, idk where this client's source code is.

have u been able to do any requests w it?