Examine source code of Discrypt

{
  "manifest_version": 2,
  "name": "Discrypt",
  "version": "1.0.7",
  "description": "Encrypt and Decrypt Discord messages.",
  "browser_action": {
    "default_popup": "popup/index.html",
    "default_title": "Discrypt",
    "default_icon": "assets/icon.svg"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "js/discrypt_background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://discord.com/*"
      ],
      "js": [
        "js/discrypt_index.js",
        "js/Snowflake.js"
      ]
    },
    {
      "matches": [
        "https://discord.com/*"
      ],
      "js": [
        "js/sjcl.min.js",
        "js/discrypt_localStorage.js"
      ],
      "run_at": "document_start"
    }
  ]
}