Examine source code of Offer Times

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "version": "1.8.3.2",
  "description": "__MSG_appDescription__",
  "default_locale": "en",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "webextension-polyfill.js",
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "storage",
    "identity",
    "https://www.google.com/",
    "https://calendar.google.com/*",
    "https://outlook.live.com/*",
    "https://outlook.office.com/*",
    "https://outlook.office365.com/*",
    "https://outlook.microsoft.com/*",
    "https://offer-times.com/*",
    "https://www.google-analytics.com/",
    "https://www.googleapis.com/"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://calendar.google.com/*"
      ],
      "js": [
        "webextension-polyfill.js",
        "core/timezone.js",
        "core/i18n_translations.js",
        "core/i18n_ui.js",
        "core/i18n_output.js",
        "core/settings_ui.js",
        "core/dropdown_base.js",
        "core/settings.js",
        "core/language_settings.js",
        "core/output.js",
        "core/analytics.js",
        "core/dom_health.js",
        "core/clipboard.js",
        "core/shortcut_hint.js",
        "core/constants.js",
        "core/clear_all.js",
        "core/dark_mode.js",
        "core/hold.js",
        "core/onboarding.js",
        "core/date_utils.js",
        "core/milestones.js",
        "core/state.js",
        "core/templates.js",
        "gcal-extension/content.js"
      ],
      "css": [
        "core/theme.css",
        "gcal-extension/styles.css"
      ],
      "run_at": "document_idle",
      "all_frames": true
    },
    {
      "matches": [
        "https://outlook.live.com/*",
        "https://outlook.office.com/*",
        "https://outlook.office365.com/*",
        "https://outlook.microsoft.com/*"
      ],
      "js": [
        "webextension-polyfill.js",
        "core/timezone.js",
        "core/i18n_translations.js",
        "core/i18n_ui.js",
        "core/i18n_output.js",
        "core/settings_ui.js",
        "core/dropdown_base.js",
        "core/settings.js",
        "core/language_settings.js",
        "core/output.js",
        "core/analytics.js",
        "core/dom_health.js",
        "core/clipboard.js",
        "core/shortcut_hint.js",
        "core/constants.js",
        "core/clear_all.js",
        "core/dark_mode.js",
        "core/hold.js",
        "core/onboarding.js",
        "core/date_utils.js",
        "core/milestones.js",
        "core/state.js",
        "core/templates.js",
        "outlook-extension/content.js"
      ],
      "css": [
        "core/theme.css",
        "outlook-extension/styles.css"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "offer-times@offer-times.com",
      "strict_min_version": "78.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}