Examine source code of Center docs.rs

{
  "manifest_version": 2,
  "name": "Center docs.rs",
  "version": "1.0",
  "description": "Center rust docs's content",
  "browser_specific_settings": {
    "gecko": {
      "id": "saengduanpawat@gmail.com"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://doc.rust-lang.org/*",
        "https://docs.rs/*"
      ],
      "exclude_matches": [
        "https://docs.rs/crates/*"
      ],
      "js": [
        "center-docs.js"
      ]
    }
  ]
}