Examine source code of nazeka

{
  "manifest_version": 2,
  "name": "nazeka",
  "version": "0.4.10",
  "author": "Wareya",
  "homepage_url": "https://github.com/wareya/nazeka",
  "description": "A rikai replacement.",
  "applications": {
    "gecko": {
      "id": "nazeka@wareya.moe",
      "strict_min_version": "57.0"
    }
  },
  "permissions": [
    "contextMenus",
    "storage",
    "tabs",
    "clipboardRead",
    "unlimitedStorage",
    "<all_urls>"
  ],
  "background": {
    "page": "background.html"
  },
  "web_accessible_resources": [
    "img/closebutton24.png",
    "img/leftarrow24.png",
    "img/rightarrow24.png",
    "dict/JMdict1.json",
    "dict/JMdict2.json",
    "dict/JMdict3.json",
    "dict/JMdict4.json",
    "dict/JMdict5.json",
    "dict/JMdict6.json",
    "dict/JMdict7.json",
    "dict/JMdict8.json",
    "dict/JMdict9.json",
    "dict/JMdict10.json",
    "dict/JMdict11.json",
    "dict/jdic audio.txt",
    "dict/deconjugator.json",
    "reader.js",
    "reader.html",
    "mining.js",
    "mining.html",
    "livemining.js",
    "livemining.html",
    "json_config.js",
    "json_config.html",
    "jmdictabbreviations.html"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "ftp://*/*",
        "file:///*"
      ],
      "js": [
        "texthook.js"
      ],
      "all_frames": true
    }
  ],
  "options_ui": {
    "browser_style": true,
    "page": "options.html"
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": {
      "16": "img/action16.png",
      "32": "img/action32.png",
      "512": "img/action512.png"
    },
    "default_title": "Nazeka (disabled)",
    "default_area": "navbar"
  },
  "icons": {
    "16": "img/enabled16.png",
    "32": "img/enabled32.png",
    "512": "img/enabled512.png"
  }
}