Examine source code of Logseq Clipper

{
  "manifest_version": 2,
  "name": "Logseq Clipper",
  "description": "Select text and export as a logseq block.",
  "version": "0.0.2",
  "icons": {
    "64": "icons/icon.png"
  },
  "permissions": [
    "activeTab",
    "clipboardWrite"
  ],
  "background": {
    "scripts": [
      "background_script.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options/index.html",
    "open_in_tab": true
  },
  "commands": {
    "activate-extension": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      },
      "description": "Clip LogSeq TODO block"
    },
    "activate-alternate-extension": {
      "suggested_key": {
        "default": "Ctrl+Shift+U"
      },
      "description": "Clip LogSeq block"
    },
    "copy-to-clipboard": {
      "suggested_key": {
        "default": "Ctrl+Shift+I"
      },
      "description": "Copy content to clipboard"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8fb00702-25d4-447e-bd8f-470a5f10ebf2}"
    }
  }
}