Prisma seems to interact differently with a query that has been modified versus original

[main burrow]

I'm currently trying to modify a query before submitting it to a database by adding parameters to it dynamically, but I believe prisma is interacting with the objects differently? I am not sure why that is as the objects appear to be identical.

export async function test(){
  try {
    let query = {
      where : {
        card_class: {
          equals: c_class.Swordcraft
        },
        
      }
    }
    
    query.where = await add_entry_to_query(query.where, {
      cost: {
        equals: 7
      },
    })

    //  query = {
    //   where : {
    //     card_class: {
    //       equals: c_class.Swordcraft
    //     },
    //     cost: {
    //       equals: 7
    //     },
    //   }
    // }
    console.log(query)
    //@ts-ignore
    return await db.card.findMany(query)
  }
  catch(err){
    throw new Error(`error: ${err}`)
  }
}``` is the function i'm using to test this

async function add_entry_to_query(query_where : any, new_param : any) {
  let query_keys = Object.keys(query_where)
  let new_keys = Object.keys(new_param)
  new_keys.forEach(key => {
    if(query_keys.includes(key)){
      query_where[key] = {...query_where[key], ...new_param[key]}
    }
    else{
      Object.defineProperty(query_where, key, {
        value: new_param[key]
      })
    }
  })
  return query_where  
}```

is the add entry to query function i'm using

i'm not sure if prisma natively has something like this

outputs from the console.log and prisma query of both are as follows:

# using the add_entry method 
{
  where: {
    card_class: {
      equals: "Swordcraft",
    },
    cost: {
      equals: 7,
    },
  },
}
prisma:info Starting a postgresql pool with 17 connections.
prisma:query SELECT (# a bunch of tables here #) FROM "public"."card" WHERE "public"."card"."card_class" = CAST($1::text AS "public"."c_class") OFFSET $2

versus

# using the hard assigned value
{
  where: {
    card_class: {
      equals: "Swordcraft",
    },
    cost: {
      equals: 7,
    },
  },
}
prisma:info Starting a postgresql pool with 17 connections.
prisma:query SELECT (# a bunch of tables here #) FROM "public"."card" WHERE ("public"."card"."card_class" = CAST($1::text AS "public"."c_class") AND "public"."card"."cost" = $2) OFFSET $3```