Examine source code of Quiet

{
  "name": "Quiet",
  "short_name": "Quiet",
  "version": "0.0.7",
  "manifest_version": 2,
  "description": "Silence bad Twitter actors for once and for all.",
  "homepage_url": "https://quietnow.xyz",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon48.png",
    "default_title": "Quiet",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "storage",
    "https://twitter.com/*",
    "https://api.twitter.com/*",
    "https://anti.forklabs.workers.dev/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*"
      ],
      "css": [
        "content-scripts/inject.css"
      ]
    },
    {
      "matches": [
        "https://twitter.com/*"
      ],
      "js": [
        "content-scripts/inject.js"
      ]
    }
  ]
}