Cannot insert data into mongo collection after cleaning it - node.js

Question

I have a little trouble: I'm just trying to insert the list of raw records into mongodb collection right after I cleaned it. But I don't receive any feedback from insert method. This is my code:
model.collection.remove((removeError, removeResult) => {
console.log('remove cb');
model.collection.insert(seeds, (insertError, insertedRecords) => {
console.log('insert cb');
});
});
Actually I wanted to do this by using the mongoose API(model is the mongoose model) but on my way of exploring this problem I figured out that the native driver don't execute this as well.
That's what I have trying to use mongoose wrappers:
model.remove({}, (err, docs) => {
if (err) {
console.log('remove error');
} else {
console.log('remove success');
model.insertMany(seeds, (insertError, insertedRecords) => {
if (insertError) {
console.log('insert error');
} else {
console.log('insert success');
}
});
}
});
When I run this script I see 'remove success' and that's all. And if I comment out the removing process then 'insert success' is displayed
My mongoose model is really simple:
const schema = new Schema({
name: {type: String, unique: true, index: true},
});
seeds variable:
export default [
{name: 'USA'},
{name: 'Germany'},
{name: 'France'}, ...
Please explain me where am I wrong or what I don't understand
UPD
I have tried this using the MongoClient and it works!
MongoClient.connect(url, function(err, db) {
const collection = db.collection('countries');
collection.deleteMany({}, (err, r) => {
console.log('delete', err);
collection.insertMany(seeds, (err, r) => {
console.log('insert', err);
db.close();
Country.find({}, function (err, res) {
console.log(res);
});
});
});
});
So problem is in the mongoose. Though actually I thought {ModelName}.collection is the native driver

Answer 1

To clear up your confusion, this line model.collection.remove((removeError, removeResult) is wrong.
The syntax for remove is this, db.collection.remove(
<query>,
<justOne>
)
there is no query , but here model.remove({}, (err, docs) => { you do have query({}) which means delete all.
examine this statement db.mycol.remove({'title':'MongoDB Overview'}) which is a query to find and delete any document with a title of MongoDB Overview.
Does any of this makes sense?