The volume after packing is too large!

[helpceo]

...build\win-unpacked\resources\app.asar.unpacked
This folder is redundant, do not know why it is packed out!
The extra folder packed up is 100 megabytes in size,When it's turned on, there's another electron inside.
system: Windows 10
node: v10.13.0
npm: 6.4.1

[RogerPaladin]

Same issue
system: Windows 8.1

[raythunder]

package.json

"build": {
    "files": [
      "dist/electron/**/*",
      "!**/node_modules/electron/**/*"    // add this
    ],