my code is :

  return await axios
    .all(requests)
    .then(
      axios.spread(async (...responses) => {
        let fish = [...responses].map((e) => e.data.results);
        let newFish = Object.assign({}, ...fish);
        console.log(fish, 'and', newFish);
      }),
    )

a console.log of fish shows:

[(Object of 100 keys), (Object of 100 keys),(Object of 100 keys),(Object of 70 keys)]

but a console.log of newFish instead of being the desired : (Object of 370 keys)

shows (object of 100 keys)

This suggests object. assign is overwriting instead of combining.

Why does it do this?

I need to do

return Object.addign({},...responses)

and have this combine all the objects into one object

more info:

OBJECT WITH 100 keys:

all objects

All have a unique id and are alphabetically ordered. every value is completely unique.

Object with 100 keys is a combination of the last object with 100 keys and the last object that has only 70 keys.

as you can see here in how it adds more after 70