Examine source code of Nightspar — Vocabulary Flashcards, Any Page

{
  "manifest_version": 3,
  "name": "Nightspar — Vocabulary Flashcards, Any Page",
  "description": "Save words from any page. AI builds a complete flashcard for the meaning used in that sentence; spaced repetition makes it stick.",
  "version": "1.2.1",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@nightspar.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo",
          "authenticationInfo",
          "websiteContent"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage",
    "identity",
    "alarms"
  ],
  "host_permissions": [
    "https://api.nightspar.com/*",
    "https://auth.nightspar.com/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "fonts/*",
        "panel.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "resources": [
        "probe.png"
      ],
      "matches": [
        "https://nightspar.com/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Nightspar",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}