import { ClientFactory } from "git-filesystem";

const gitHubClient = new ClientFactory().getClientForProvider(
  "github",
  "github-username",
  "access-token",
  "user-agent-name"
);
// or
const gitLabClient = new ClientFactory().getClientForProvider(
  "gitlab",
  "gitlab-username",
  "access-token",
  "user-agent-name"
);
// or
const bitBucketClient = new ClientFactory().getClientForProvider(
  "bitbucket",
  "bitbucket-username",
  "access-token",
  "user-agent-name"
);

// and then

const gitHubRepository = gitHubClient.getRepository("repository-name");

let fileContent = await gitHubRepository.readFile("file/path.txt");
fileContent += "\n\nNewData";

await gitHubRepository.updateFile("file/path.txt", fileContent);