This is a little script that I used to migrate my tabs from Chrome to Firefox, by using Tab Session Manager. Unfortunately though, the export file from Chrome failed silently to import to Firefox, so I needed to process the file: this produces output of the tab URLs and the title of each tab in a window, separated out by the windows that you had…

export-tsm-urls.js

import { readFile } from 'node:fs/promises'

async function main(args) {
  const file = args[2];
  const contents = await readFile(args[2], { encoding: "utf8" })
  const session = JSON.parse(contents)[0];

  let count = 0;
  for (const windowId in session.windows) {
    const window = session.windows[windowId];

    process.stdout.write("\n\n --- \n\n");

    for (const tabId in window) {
      const tab = window[tabId];

      process.stdout.write(`${tab.url} ${tab.title}\n`);
    }
  }
};

main(process.argv).catch(console.error.bind(console));

package.json

{
  "type": "module",
  "name": "export-tsm-urls",
  "private": true,
  "version": "1.0.0",
  "engines" : { 
    "node" : ">=18"
  }
}