Examine source code of RESTED APS

{
  "name": "RESTED APS",
  "version": "0.0.10resigned1",
  "description": "A REST client for the rest of us, with APS features",
  "homepage_url": "https://github.com/odin-public/RESTED-APS",
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "rested-aps@restedclient",
      "strict_min_version": "52.0"
    }
  },
  "icons": {
    "16": "dist/img/favicon/favicon-16x16.png",
    "32": "dist/img/favicon/favicon-32x32.png",
    "64": "dist/img/favicon/favicon-64x64.png",
    "96": "dist/img/favicon/favicon-96x96.png",
    "128": "dist/img/favicon/favicon-128x128.png"
  },
  "browser_action": {
    "default_title": "Open RESTED APS tab",
    "default_icon": {
      "16": "dist/img/favicon/favicon-16x16.png",
      "32": "dist/img/favicon/favicon-32x32.png",
      "64": "dist/img/favicon/favicon-64x64.png",
      "96": "dist/img/favicon/favicon-96x96.png",
      "128": "dist/img/favicon/favicon-128x128.png"
    }
  },
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "match_about_blank": false,
      "all_frames": true,
      "js": [
        "dist/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "<all_urls>",
    "webRequest",
    "storage"
  ]
}