Examine source code of jeff-who

{
  "author": "A SpaceX Fan",
  "manifest_version": 2,
  "name": "jeff-who",
  "version": "1.0.3resigned1",
  "description": "Replaces Bezos with Jeff Who?",
  "icons": {
    "40": "icons/icon-40.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "src/jeff-who.js"
      ]
    },
    {
      "matches": [
        "https://en.wikipedia.org/wiki/Jeff_Bezos",
        "https://en.wikipedia.org/wiki/jeff_bezos",
        "https://en.wikipedia.org/wiki/Jeff_bezos",
        "https://en.wikipedia.org/wiki/jeff_Bezos"
      ],
      "js": [
        "src/wikipedia.js"
      ]
    },
    {
      "matches": [
        "https://twitter.com/jeffbezos",
        "https://twitter.com/jeffBezos",
        "https://twitter.com/Jeffbezos",
        "https://twitter.com/JeffBezos"
      ],
      "js": [
        "src/twitter.js"
      ]
    },
    {
      "matches": [
        "https://www.washingtonpost.com/*"
      ],
      "js": [
        "src/washington-post.js"
      ]
    },
    {
      "matches": [
        "https://www.blueorigin.com/"
      ],
      "js": [
        "src/blue-origin.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "images/*.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a0fedaed-ba27-49c1-acfa-1d727b1f6d8d}"
    }
  }
}