RipHerokuEnvs.js

console.log(
  JSON.stringify(
    Object.fromEntries(
      [...document.querySelectorAll(".config-vars tr")]
        .map((row) => [
          row.querySelector(".config-var-key").value,
          row.querySelector(".config-var-value").value,
        ])
        .filter((item) => !!item[0] && !!item[1])
    ),
    null,
    2
  )
    .split("\n")
    .slice(1, -1)
    .map((row) => row.trim().slice(1).replace('": ', "="))
    .map((row) => (row.endsWith(",") ? row.slice(0, -1) : row))
    .join("\n")
);