Examine source code of Woolsocks

{
  "manifest_version": 2,
  "name": "Woolsocks",
  "version": "0.10.4",
  "description": "Activate cashback automatically and discover gift cards at checkout on supported merchants.",
  "browser_specific_settings": {
    "gecko": {
      "id": "woolsocks@woolsocks.eu"
    }
  },
  "browser_action": {
    "default_title": "Woolsocks",
    "default_popup": "src/popup/index.html",
    "default_icon": {
      "16": "icons/icon-grey-16.png",
      "32": "icons/icon-grey-32.png",
      "48": "icons/icon-grey-48.png"
    }
  },
  "background": {
    "scripts": [
      "assets/partners-config-CAcTrxig.js",
      "assets/i18n-6dsryDvt.js",
      "assets/platform-G29XDU__.js",
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "16": "icons/icon-grey-16.png",
    "32": "icons/icon-grey-32.png",
    "48": "icons/icon-grey-48.png",
    "128": "icons/icon-yellow-128px16.png"
  },
  "options_ui": {
    "page": "src/options/index.html",
    "open_in_tab": false
  },
  "permissions": [
    "tabs",
    "storage",
    "notifications",
    "cookies",
    "webNavigation",
    "https://*/*",
    "http://*/*",
    "https://woolsocks.eu/*",
    "https://api.woolsocks.eu/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/checkout.js"
      ],
      "run_at": "document_end",
      "exclude_matches": [
        "https://woolsocks.eu/*",
        "https://*.woolsocks.eu/*",
        "http://woolsocks.eu/*",
        "http://*.woolsocks.eu/*"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/entrance.js"
      ],
      "run_at": "document_end",
      "exclude_matches": [
        "https://woolsocks.eu/*",
        "https://*.woolsocks.eu/*",
        "http://woolsocks.eu/*",
        "http://*.woolsocks.eu/*"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "assets/i18n-6dsryDvt.js",
        "content/oc-panel.js"
      ],
      "run_at": "document_start",
      "exclude_matches": [
        "https://woolsocks.eu/*",
        "https://*.woolsocks.eu/*",
        "http://woolsocks.eu/*",
        "http://*.woolsocks.eu/*"
      ]
    },
    {
      "matches": [
        "https://woolsocks.eu/*",
        "https://*.woolsocks.eu/*"
      ],
      "js": [
        "content/relay.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/injector.js"
      ],
      "run_at": "document_end",
      "exclude_matches": [
        "https://woolsocks.eu/*",
        "https://*.woolsocks.eu/*",
        "http://woolsocks.eu/*",
        "http://*.woolsocks.eu/*"
      ]
    }
  ],
  "web_accessible_resources": [
    "content/*.css",
    "content/*.js",
    "icons/state-*.png",
    "icons/icon-*.png",
    "public/icons/*.svg",
    "public/icons/*.png",
    "public/fonts/*.otf",
    "public/fonts/*.ttf",
    "assets/content-*.js",
    "assets/entrance-*.js",
    "assets/i18n-*.js",
    "assets/ocpanel-*.js",
    "assets/relay-*.js",
    "assets/voucher-popup-page.js"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'; connect-src 'self' https:;"
}