In order to use with pnpm, you’ll need to adjust your .npmrc to use any one the following approaches in order for your dependencies to be bundled correctly (ref: #6389):

node-linker=hoisted
public-hoist-pattern=*
shamefully-hoist=true

Note: Setting shamefully-hoist to true is the same as setting public-hoist-pattern to *.

Quelle: https://www.electron.build/index.html#note-for-pnpm