Examine source code of TSS+

{
  "manifest_version": 2,
  "name": "TSS+",
  "version": "1.1b.77resigned1",
  "description": "Enhances user experience on the LOST fansite Hatch Simulator : \nhttps://theswanstation.tk/",
  "homepage_url": "https://theswanstation.tk/",
  "icons": {
    "48": "_ICON/dharma_logo_black_48.png",
    "96": "_ICON/dharma_logo_black_96.png"
  },
  "applications": {
    "gecko": {
      "id": "tss_plus@mozilla.org",
      "strict_min_version": "44.0a1",
      "strict_max_version": "48.0"
    }
  },
  "permissions": [
    "activeTab",
    "*://*.theswanstation.tk/*",
    "*://*.weesheepknits.com/*",
    "*://45.55.63.64/*",
    "*://*.teleport.to/*"
  ],
  "browser_action": {
    "default_icon": {
      "16": "_ICON/dharma_logo_black_16.png",
      "19": "_ICON/dharma_logo_black_19.png",
      "24": "_ICON/dharma_logo_black_24.png",
      "32": "_ICON/dharma_logo_black_32.png",
      "38": "_ICON/dharma_logo_black_38.png",
      "48": "_ICON/dharma_logo_black_48.png",
      "64": "_ICON/dharma_logo_black_64.png",
      "96": "_ICON/dharma_logo_black_96.png"
    },
    "default_popup": "_browser_action_popup_choose_logo.htm",
    "default_title": "TSS+"
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "all_frames": false,
      "matches": [
        "*://*.theswanstation.tk/*",
        "*://*.weesheepknits.com/*",
        "*://45.55.63.64/*",
        "*://*.teleport.to/*"
      ],
      "exclude_matches": [],
      "css": [
        "_content_scripts_CSS_0_document_start.css"
      ],
      "js": [
        "_web_accessible_resources_JS_Boot.js",
        "_content_scripts_JS_0_document_start.js"
      ]
    },
    {
      "run_at": "document_end",
      "all_frames": false,
      "matches": [
        "*://*.theswanstation.tk/*",
        "*://*.weesheepknits.com/*",
        "*://45.55.63.64/*",
        "*://*.teleport.to/*"
      ],
      "exclude_matches": [],
      "css": [
        "_content_scripts_CSS_1_document_end.css"
      ],
      "js": [
        "_content_scripts_JS_1_document_end.js"
      ]
    },
    {
      "run_at": "document_idle",
      "all_frames": false,
      "matches": [
        "*://*.theswanstation.tk/*",
        "*://*.weesheepknits.com/*",
        "*://45.55.63.64/*",
        "*://*.teleport.to/*"
      ],
      "exclude_matches": [],
      "css": [
        "_content_scripts_CSS_2_document_idle.css"
      ],
      "js": [
        "_content_scripts_JS_2_document_idle.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "_RES/enterthehatch.com-img-armoury.jpg",
    "_RES/enterthehatch.com-img-epman.jpg",
    "_RES/_logo_Dharma.svg",
    "_RES/_logo_TheSwan.svg",
    "_RES/_logo_ThePearl.svg",
    "_RES/_logo_TheArrow.svg",
    "_RES/_logo_TheFlame.svg",
    "_RES/_logo_TheHydra.svg",
    "_RES/_logo_TheLampPost.svg",
    "_RES/_logo_TheLookingGlass.svg",
    "_RES/_logo_TheOrchid.svg",
    "_RES/_logo_TheStaff.svg",
    "_RES/_logo_TheTempest.svg",
    "_RES/_img_apple3_button_left_off.png",
    "_RES/_img_apple3_button_left_on.png",
    "_RES/_skin_tibn_bg_1920x1080.jpg",
    "_RES/_skin_tibn_bg_div_0F0F0F_50.png",
    "_RES/_skin_tibn_bg_div_0F0F0F_80.png",
    "_RES/_skin_tibn_bg_div_008800_50.png",
    "_RES/_skin_tibn_bg_div_008800_80.png",
    "_RES/_skin_tibn_bg_div_222222_80.png",
    "_web_accessible_resources_JS_Boot.js",
    "_web_accessible_resources_JS_Main.js",
    "_web_accessible_resources_JS_Patch.js"
  ]
}