npm install pnpm
pnpm install

edit node_modules\vue-devtools\vender\manifest.json

from

  "permissions": [
	"http://*/*",
	"https://*/*",
	"file:///*",
	"contextMenus"
  ],

to
  
  "permissions": [
	"http://*/*",
	"https://*/*",
	"file:///*",
	"contextMenus",
	"*://*/*"
  ],

path\to\nw.exe "$(CURRENT_DIRECTORY)" --load-extension="$(CURRENT_DIRECTORY)\node_modules\vue-devtools\vender"

NW.js app : this folder
NW.js arguments : --load-extension="node_modules\vue-devtools\vender"
Working directory : this folder
NW.js interpreter : path\to\nw.exe