Examine source code of TT Plugged In

{
  "name": "TT plugged in",
  "version": "0.0.0.8",
  "description": "TT plugged in provides autobopping, and volume control among others",
  "homepage_url": "https://github.com/nthitz/pluggedTT",
  "manifest_version": 2,
  "minimum_chrome_version": "74",
  "icons": {
    "128": "/icon.png"
  },
  "permissions": [],
  "background": {
    "persistent": false,
    "scripts": [
      "/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.turntable.fm/*"
      ],
      "css": [
        "/myStyles.css"
      ],
      "js": [
        "/contentScript.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "/modal.html",
    "/localContextScript.js.txt"
  ]
}