Examine source code of JSTOR Browser Extension

{
  "manifest_version": 2,
  "name": "JSTOR",
  "description": "Access JSTOR features directly from your browser, starting with search from the popup, side panel, and right-click context menu.",
  "version": "0.0.4",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "96": "icons/96.png",
    "128": "icons/128.png"
  },
  "author": "ITHAKA",
  "homepage_url": "https://github.com/ithaka/jstor-browser-extension",
  "permissions": [
    "contextMenus",
    "tabs",
    "storage"
  ],
  "web_accessible_resources": [
    "icons/32.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@jstor-browser-extension.ithaka.org",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "JSTOR",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "open_in_tab": true,
    "browser_style": false,
    "page": "options.html"
  },
  "sidebar_action": {
    "default_panel": "sidepanel.html",
    "browser_style": false,
    "default_title": "JSTOR"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ],
      "world": "ISOLATED"
    }
  ]
}