[solved] how to use webpack to package js files into json files

Business background

write Mini Program with webstorm
there is a app.json file that holds all page paths
because there are dozens of pages, it is very confusing to list, and it is troublesome to find something later
so I want to add comments to classify

sample code

{
  "pages": [
    // 
    "pages/window/window",
    "pages/ptp/ptp",
    "pages/detail2/detail2",
    "pages/detail/detail",
    "pages/doubleroom/room/room",
    "pages/mine/mine",
    "pages/player/index/index",
    "pages/main/main",
    // 
    "pages/doubleroom/roomlist/roomlist",
    "pages/doubleroom/roomname/roomname",
    "pages/minezb/minezb",
    "pages/zbappintosc/zbappintosc",
    "pages/index/index",
    "pages/mysc/mysc",
    // 
    "pages/changegg/changegg",
    "pages/ggs/ggs",
    "pages/bjgg/bjgg",
    "pages/zpzb/zpzb",

problem description

but json files do not support comments
if written in this way, an error will be reported in Mini Program"s developer tool

try it yourself

used mpvue
their page information is the pages parameter

main.js

finally automatically compiled into app.json

but don"t know how mpvue is implemented

expected results

how can I implement my requirements through a webpack plug-in? Package the following js file into json file

export default {
  pages: [
    // 
    "pages/a",
    // 
    "pages/b
  ]
}