Mongoose Model.find bukan fungsi?

Ekspor modul Anda salah

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var listSchema = new Schema({
    name: { type: String, default: datestring + " List" }
});

**mongoose.exports = mongoose.model('List', listSchema);** <!-- this is wrong -->

seharusnya

**module.exports = mongoose.model('List', listSchema)**