Examine source code of Meme Soundpad

{
  "manifest_version": 2,
  "name": "Meme Soundpad",
  "version": "4.7",
  "description": "Twelve built-in effects and unlimited custom pads, played straight from the toolbar.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{eedd17d0-cf16-47a6-8ba6-e92e807c1c95}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "64": "images/icon64.png",
    "96": "images/icon96.png",
    "128": "images/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "src/core.js",
      "src/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "src/popup.html",
    "default_title": "Meme Soundpad",
    "default_icon": {
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "64": "images/icon64.png",
      "96": "images/icon96.png",
      "128": "images/icon128.png"
    }
  },
  "commands": {
    "play-1": {
      "suggested_key": {
        "default": "Alt+Shift+1"
      },
      "description": "Play favourite 1"
    },
    "play-2": {
      "suggested_key": {
        "default": "Alt+Shift+2"
      },
      "description": "Play favourite 2"
    },
    "play-3": {
      "suggested_key": {
        "default": "Alt+Shift+3"
      },
      "description": "Play favourite 3"
    }
  }
}