Examine source code of LoopClipper

{
  "manifest_version": 3,
  "name": "LoopClipper",
  "version": "1.0.0",
  "description": "Lặp đoạn nhanh trong tab: chọn start/end trên thanh tiến độ hoặc dùng phím để bật loop cho đoạn audio/video.",
  "icons": {
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "commands": {
    "set-start": {
      "suggested_key": {
        "default": "Ctrl+Shift+1",
        "mac": "Command+Shift+1"
      },
      "description": "Set loop start"
    },
    "set-end": {
      "suggested_key": {
        "default": "Ctrl+Shift+2",
        "mac": "Command+Shift+2"
      },
      "description": "Set loop end"
    },
    "toggle-loop": {
      "suggested_key": {
        "default": "Ctrl+Shift+3",
        "mac": "Command+Shift+3"
      },
      "description": "Toggle loop on/off"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@loopclipper-example",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}