VSCode module.exports自动完成不起作用

Question

Using latest VSCode version 1.30.2 and it doesn't see the functions that are inside the exported module.

this is in model.js

var userModel = mongoose.model('userModel', usersSchema);
userModel.isUsernameTaken = isUsernameTaken;
module.exports = userModel;

function isUsernameTaken(username) {
    return userModel.findOne({username:username});
}

and in app.js

var userModel = require('./model');

Now upon typing userModel. in app.js I should see a suggestion for autocompletion of isUsernameTaken, but it's not there and also not any of the functions declared in model are "visible". However if I type the exact function name (case-sensitive). (ex: userModel.isUserNameTaken(etc)) it works. What is wrong ?

Answer 1

When you say userModel.isUsernameTaken(username) , what you are really saying is mongoose.model('userModel', usersSchema).isUsernameTaken(username) , in which this would return as undefined. What you would have to do is make user Model into an object with the mongoose.model('userModel', usersSchema) inside of it. Kind of like this:

var userModel = function () {
    this.model: mongoose.model('userModel', usersSchema),
    this.isUsernameTaken: (username) => {
        return this.model.findOne({username:username});
    }
};

Then if you wanted to access these attributes you could use var user = new userModel(); then use user.isUsernameTaken(/*put username here*/); . Or if you wanted to access the model alone you could do: user.model . I hope this answers your question.

Answer 2

I managed to fix it by changing in model.js

module.exports.default = userModel;

and then in another file:

var userModel = require(./model).default;

Now intellisense works as it should.