Typescript: disallow ipc.transforms in electron-log/renderer

[jjeff]

The following code does not produce a Typescript error:

import electron_log from 'electron-log/renderer'
electron_log.transports.ipc.transforms.push(({ data }) => {
    data.unshift('(main)')
    return data
  })

However, when run in a renderer process, it produces the following error:

TypeError: Cannot read properties of undefined (reading 'push')
    at init (/Users/j/Code/proj/.webpack/renderer/controller_window/preload.js:89794:50)