Examine source code of Helium 10

{
  "author": "Helium10 <support@helium10.com>",
  "background": {
    "persistent": true,
    "scripts": [
      "background.js",
      "vendors.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icon/16-off.png",
      "48": "icon/48.png"
    },
    "default_popup": "popup.html",
    "default_title": "Helium 10"
  },
  "content_scripts": [
    {
      "all_frames": false,
      "css": [
        "content-script.css"
      ],
      "js": [
        "helium10.js",
        "vendors.js"
      ],
      "matches": [
        "*://*.helium-dev.com/*",
        "*://*.helium10-dev.com/*",
        "*://*.helium10.com/*"
      ],
      "run_at": "document_end"
    },
    {
      "all_frames": false,
      "css": [
        "content-script.css"
      ],
      "exclude_matches": [
        "*://*.sellercentral-europe.amazon.com/*",
        "*://*.sellercentral.amazon.com/*",
        "*://*.sellercentral.amazon.ca/*",
        "*://*.sellercentral.amazon.co.uk/*",
        "*://*.sellercentral.amazon.de/*",
        "*://*.sellercentral.amazon.es/*",
        "*://*.sellercentral.amazon.fr/*",
        "*://*.sellercentral.amazon.it/*",
        "*://*.ams.amazon.com/*",
        "*://*.ams.amazon.ca/*",
        "*://*.ams.amazon.co.uk/*",
        "*://*.ams.amazon.de/*",
        "*://*.ams.amazon.es/*",
        "*://*.ams.amazon.fr/*",
        "*://*.ams.amazon.it/*",
        "*://*.advertising.amazon.com/*",
        "*://*.advertising.amazon.ca/*",
        "*://*.advertising.amazon.co.uk/*",
        "*://*.advertising.amazon.de/*",
        "*://*.advertising.amazon.es/*",
        "*://*.advertising.amazon.fr/*",
        "*://*.advertising.amazon.it/*",
        "*://*.merch.amazon.com/*",
        "*://*.aws.amazon.com/*",
        "*://*.amazon.nl/*",
        "*://*.amazon.pl/*",
        "*://*.amazon.se/*",
        "*://*.amazon.sa/*",
        "*://*.amazon.sg/*",
        "*://*.amazon.ae/*",
        "*://*.amazon.com.br/*",
        "*://*.amazon.com.tr/*",
        "*://*.amazon.co.jp/*"
      ],
      "js": [
        "content-script.js",
        "vendors.js",
        "detect.js"
      ],
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "content_security_policy": "script-src 'unsafe-eval' 'self'; object-src 'self'",
  "description": "Simplify Amazon keyword research, track search term rankings, find profitable products, spy on competitors, protect listings & more.",
  "differential_fingerprint": "1.ccbab1ffbb08e4287a2850a5dba4b2e15bc0c669db99cd8384321f02611e684f",
  "externally_connectable": {
    "matches": [
      "*://*.helium-dev.com/*",
      "*://*.helium10.com/*"
    ]
  },
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "128": "icon/128.png"
  },
  "incognito": "spanning",
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnelehx76t6pioKAV/ybv5K3RfDaUlnqJ06Own2GNYEiQYBfcwVg3IxaWgzcM0G9GCLkrB3WUh61R4ONSQrWqRETnGO409ih9gXlii5fZ+nciiuStqXFxpzfHyj7D126yZnaynx24nNt/ZOqzhOdrG7AIBZ3ysRDanV7TC3X16qXWmonMexhttoy/bZLI5X0zwQMxRR3yvwQCQoezI9F6U2hzr3UxQLSdcsyb2KB4JYEIxLMfTu2HI6yjW2gDiirxreaXH6gNdAozv7O0v3t3PEwXLKQ/J04LDwNvqFP7Wm80GQrMLrKiw2+iUMROv1xa1io4Jg+nc1rVeJXT7F/zpwIDAQAB",
  "manifest_version": 2,
  "name": "Helium 10",
  "options_page": "options.html",
  "permissions": [
    "background",
    "tabs",
    "storage",
    "unlimitedStorage",
    "<all_urls>"
  ],
  "short_name": "Helium 10",
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "6.6.2",
  "version_name": "6.6.2",
  "web_accessible_resources": [
    "sound/*",
    "js/*",
    "css/*",
    "html/*",
    "icons/*",
    "images/*",
    "templates/*"
  ]
}