Examine source code of FlagSwap

{
  "manifest_version": 3,
  "name": "FlagSwap",
  "version": "0.2.1",
  "description": "Override LaunchDarkly client-side feature flags in the browser.",
  "permissions": [
    "storage",
    "cookies",
    "contextualIdentities"
  ],
  "host_permissions": [
    "https://app.launchdarkly.com/*"
  ],
  "icons": {
    "16": "src/icons/icon-16.png",
    "32": "src/icons/icon-32.png",
    "48": "src/icons/icon-48.png",
    "96": "src/icons/icon-96.png",
    "128": "src/icons/icon-128.png"
  },
  "action": {
    "default_title": "FlagSwap",
    "default_popup": "src/popup.html",
    "default_icon": {
      "16": "src/icons/icon-16.png",
      "32": "src/icons/icon-32.png"
    }
  },
  "options_ui": {
    "page": "src/options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "src/core.js",
        "src/inject.js"
      ],
      "run_at": "document_start",
      "world": "MAIN",
      "all_frames": true
    },
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "src/state.js",
        "src/bridge.js",
        "src/banner.js"
      ],
      "run_at": "document_start",
      "world": "ISOLATED",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "src/ldapi.js",
      "src/background.js"
    ]
  },
  "sidebar_action": {
    "default_panel": "src/popup.html?ctx=panel",
    "default_title": "FlagSwap",
    "open_at_install": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "flagswap@flagswap.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}