{
"validator": {
"$jsonSchema": {
"bsonType": "object",
"properties": {
"int":
{ "bsonType": "int" }
,
"long":
{ "bsonType": "long" }
,
"double":
{ "bsonType": "double" }
,
"decimal":
{ "bsonType": "decimal" }
}
}
},
"validationLevel": "moderate",
"validationAction": "error"
}

const foo= 'foo';
const data =
{ int: new Int32(foo), long: new Long(foo), double: new Double(foo), decimal: new Decimal128(foo), }
;
await db.collection.insertOne(data);

int = 0; // as valid Int32 bsonType
long = 0; // as valid Long bsonType
double = NaN; // as valid Double bsonType
// decimal throws error:
foo not a valid Decimal128 string TypeError