Examine source code of VS code Text Completer

{
  "name": "VS code Text Completer",
  "version": "1.2",
  "description": "Completes your text, inspired by the VS code text completer",
  "permissions": [
    "contextMenus",
    "activeTab"
  ],
  "background": {
    "persistent": true,
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*"
      ],
      "js": [
        "./dist/main.js"
      ]
    }
  ],
  "page_action": {
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    },
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "manifest_version": 2
}