Am I doing this in Prod ?

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Am I doing this in Prod ?",
  "version": "0.2",
  "author": "Flora GC, Simon Belbeoch",
  "description": "Browsers' extensions (Chrome and Firefox based) to display dev environments",
  "options_ui": {
    "page": "src/settings/settings.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "didactic@barnacle"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png"
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png"
    },
    "default_title": "didactic-barnacle",
    "default_popup": "src/settings/settings.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/core/config.js",
        "src/core/main.js"
      ]
    }
  ]
}