mongoose-field-populate v2.2.10

  const mongoose = require('mongoose');
  const { ExtendedReference } = require('mongoose-field-populate');

  const ReferenceSchema = new mongoose.Schema({
    name: String,
    age: Number,
  });

  ReferenceSchema.plugin(ExtendedReference.plugin, [
    'TARGETS',
  ]);

  module.exports = mongoose.model('DEMO_ONLY', ReferenceSchema);

  const mongoose = require('mongoose');
  const { ExtendedReference } = require('mongoose-field-populate');
  const ReferenceModel = require('./reference');

  const TargetSchema = new mongoose.Schema({
    friend: new ExtendedReference(ReferenceModel)
      .on(['name', 'age'])
      .set('name', { private: true })
      .done(),
  });

  module.exports = mongoose.model('TARGETS', TargetSchema);

  const mongoose = require('mongoose');
  const { autopopulate } = require('mongoose-field-populate');
  
  const TargetSchema = new mongoose.Schema({
    email: {
      type: String,
      unique: true,
      autopopulate: true,
      autopopulateSelect: 'projection path',
    }
  });

  TargetSchema.plugin(autopopulate)