Examine source code of lessnoise

{
  "manifest_version": 2,
  "name": "lessnoise",
  "author": "Daniel Hofstetter (@dhofstet)",
  "version": "0.1.2.1",
  "description": "lessnoise is a filter for your Twitter timeline",
  "icons": {
    "48": "icons/lessnoise.svg"
  },
  "permissions": [
    "<all_urls>",
    "storage",
    "webNavigation"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*"
      ],
      "css": [
        "css/lessnoise.css"
      ],
      "js": [
        "lib/jquery-3.2.1.min.js",
        "sidebar/sidebar.js",
        "sidebar/new-filter-rule-form.js",
        "sidebar/filter-rule-list.js",
        "highlighter.js",
        "highlighters/current-user-highlighter.js",
        "filters/hashtag-filter.js",
        "filters/mention-filter.js",
        "filters/foreign-characters-filter.js",
        "filters/author-filter.js",
        "filters/retweet-filter.js",
        "filters/keyword-filter.js",
        "filter-rules.js",
        "filter.js",
        "title-tweet-counter.js",
        "tweet.js",
        "tweet-filter-rule-menu.js",
        "url-expander.js",
        "timeline.js",
        "lessnoise.js",
        "ui-options-handler.js"
      ]
    }
  ]
}