Query Mongodb works with the terminal but not with node js - node.js

Question

I find myself in front of a problem that I do not know how to solve.
The purpose of the query:
Compare the document of the selection person, and the one who requests the query if the id of the person selected is present in friend then is_friend will be equal to true otherwise it will be equal to false.
I got this query:
users.aggregate({
$match:{
search:/f/
}},{
$lookup:
{from:"users", let:{user:"$_id"}, pipeline:[{
$match:{
$expr:{
$and:[{
$in:["$$user", "$friend.id"]},{
$eq:["$_id", ObjectId("5bd22f28f77cfb1f6ce503ca")]
}]
}
}
},
{$limit:1},
{$project:{email:0, password:0}}
], as:"is_friend"}},{
$project:{name:1, search:1, desc:1, color:1, profil:1, banner:1, date:1, friend:1, is_friend:{
$cond:{
if:{
$eq:[{$arrayElemAt:["$is_friend",0]}, undefined]
},
then: "false",
else:"true"
}
}
}
})
So there is 1 document of users:
{
"_id" : ObjectId("5bd22f28f77cfb1f6ce503ca"),
"search" : "flarize",
"name" : "flarize",
"email" : "flarize.73#gmail.com",
"password" : "$2a$10$eYeOtEkEUyD7TFkjKvhZOuSSpvBolkL17TrPHuoHhOT8JrsQR0UKW",
"color" : 0,
"profil" : "",
"banner" : "",
"desc" : "",
"date" : 1540501286109,
"friend" : [
{
"id" : ObjectId("5bd19a92da24674fdabd26b6"),
"date" : 1540676931288
},
{
"id" : ObjectId("5bd22f28f77cfb1f6ce503ca"),
"date" : 1540676931288
}
]
}
When I call this request in the terminal i got this result:
{
"_id" : ObjectId("5bd22f28f77cfb1f6ce503ca"),
"search" : "flarize",
"name" : "flarize",
"color" : 0,
"profil" : "",
"banner" : "",
"desc" : "",
"date" : 1540501286109,
"friend" : [
{
"id" : ObjectId("5bd19a92da24674fdabd26b6"),
"date" : 1540666689579
},
{
"id" : ObjectId("5bd22f28f77cfb1f6ce503ca"),
"date" : 1540666689579
}
],
"is_friends" : "true"
}
That's the result I want.
But the node js i got this :
{
"_id" : ObjectId("5bd22f28f77cfb1f6ce503ca"),
"search" : "flarize",
"name" : "flarize",
"color" : 0,
"profil" : "",
"banner" : "",
"desc" : "",
"date" : 1540501286109,
"friend" : [
{
"id" : ObjectId("5bd19a92da24674fdabd26b6"),
"date" : 1540666689579
},
{
"id" : ObjectId("5bd22f28f77cfb1f6ce503ca"),
"date" : 1540666689579
}
],
is_friend : {
"_id" : ObjectId("5bd22f28f77cfb1f6ce503ca"),
"search" : "flarize",
"name" : "flarize",
"color" : 0,
"profil" : "",
"banner" : "",
"desc" : "",
"date" : 1540501286109,
"friend" : [
{
"id" : ObjectId("5bd19a92da24674fdabd26b6"),
"date" : 1540676931288
},
{
"id" : ObjectId("5bd22f28f77cfb1f6ce503ca"),
"date" : 1540676931288
}
]
}
}
How to solve the problem.
EDIT
mu node js code:
users.aggregate({
$match:{
search:new RegExp(req.body.search, 'i')
}},{
$lookup:
{from:"users", let:{user:"$_id"}, pipeline:[{
$match:{
$expr:{
$and:[{
$in:["$$user", "$friend.id"]},{
$eq:["$_id", new ObjectId(decoded["_id"])]
}]
}
}
},
{$limit:1},
{$project:{email:0, password:0}}
], as:"is_friend"}},{
$project:{name:1, search:1, desc:1, color:1, profil:1, banner:1, date:1, friend:1, is_friend:{
$cond:{
if:{
$eq:[{$arrayElemAt:["$is_friend",0]}, undefined]
},
then: "false",
else:"true"
}
}
}
}).toArray(function(err, result){
if(err) throw err;
ress.send(result);
});
Thank you for helping me