Examine source code of Subresource Integrity

{
  "manifest_version": 2,
  "name": "Subresource Integrity Tester",
  "version": "1.0.0",
  "description": "Audit scripts/styles/fonts for SRI coverage. Suggest integrity hashes when fetchable (same‑origin or CORS‑enabled). Read‑only.",
  "permissions": [
    "activeTab",
    "tabs",
    "contextMenus",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_title": "Subresource Integrity Tester",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "sri-tester@example.com",
      "strict_min_version": "102.0"
    }
  }
}