Examine source code of Reemote

{
  "manifest_version": 3,
  "name": "Reemote",
  "version": "2.9",
  "author": "vingran",
  "description": "Extension to allow Reemote app to access Deezer and manage it remotely.",
  "content_scripts": [
    {
      "matches": [
        "*://*.deezer.com/*"
      ],
      "exclude_globs": [
        "*api*",
        "*developers*"
      ],
      "js": [
        "bridge.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "reemote.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a1e86fdc-3f0e-4e01-b866-cd16ceebdcc7}",
      "strict_min_version": "58.0"
    }
  },
  "externally_connectable": {
    "matches": [
      "*://*.deezer.com/*"
    ]
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon.png",
      "32": "icon.png",
      "48": "icon.png",
      "128": "icon.png"
    }
  },
  "icons": {
    "16": "icon.png",
    "32": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  }
}