I have a function that takes in input a config file; this config file is in fact an object, something like
file first.js
// first config file
const common = require(../common)
// function that returns random day,month,year
const { day, month, year } = time.getDate()
module.exports = {
    ...common,
    dayToChoose: day,
    monthToChoose: month,
    yearToChoose: year,
    [other data]
}
since I can have different versions of this config file, each of them named differently (second.js, third.js, etc. with different data each), I created a "basic" configuration common to all of those files.
common.js is a config file that contains some data.
My question is: can common.js contain something like
const { commonDay, commonMonth, commonYear } = time.getDate()
module.exports = {
    dayToChoose: commonDay,
    monthToChoose: commonMonth,
    yearToChoose: commonYear
}
and put something in my first config file that says "if day, month, and year already exists, take those data, otherwise take the data present in the first.js file" ?
Something like
// first config file
const common = require(../common)
// function that returns random day,month,year
const { day, month, year } = time.getDate()
module.exports = {
    ...common,
    dayToChoose: dayToChoose || day,        // error: dayToChoose is not defined
    monthToChoose: monthToChoose || month,  // like above
    yearToChoose: yearToChoose || year,     // like above
    [other data which varies]
}
