get-revue-newsletters.ts

import "https://deno.land/x/dotenv/load.ts";

const response = await fetch("https://www.getrevue.co/api/v2/issues", {
  headers: {
    Authorization: `Token ${Deno.env.get("REVUE_API_KEY")}`,
  },
});

const issues = await response.json();

await Deno.writeFile(
  "./revue-newsletter-issues.json",
  new Uint8Array(new TextEncoder().encode(JSON.stringify(issues, null, 2)))
);

1. Make sure you have a .env file with a REVUE_API_KEY key and value. To get one go to https://www.getrevue.co/app/integrations and request one. It should be at the bottom of the page.
2. If you haven't already, install Deno https://deno.land/manual@v1.27.2/getting_started/installation
3. Run deno run --allow-net --allow-env --allow-read --allow-write ./get-revue-newsletters.ts
4. You should now have all your newsletters in JSON format in the file revue-newsletter-issues.json