Examine source code of SheetKeys

{
  "manifest_version": 3,
  "name": "SheetKeys",
  "version": "0.5",
  "description": "SheetKeys adds powerful keyboard shortcuts to Google Sheets, in the spirit of the Vim text editor.",
  "permissions": [
    "storage"
  ],
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background_script.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://docs.google.com/spreadsheets/*",
        "https://docs.google.com/a*/spreadsheets/*"
      ],
      "js": [
        "content_scripts/keyboard_utils.js",
        "content_scripts/settings.js",
        "content_scripts/sheet_actions.js",
        "content_scripts/ui.js",
        "content_scripts/commands.js",
        "help_dialog.js"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "page_scripts/page_script.js",
        "fontello_svg_icon_font.css",
        "help_dialog.css",
        "help_dialog.html"
      ],
      "matches": [
        "https://docs.google.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "sheetkeys@github.com",
      "strict_min_version": "112.0"
    }
  }
}