mongoose 4.0.1 Error: "Cannot read property 'prototype' of undefined"

Flow the prompt to check the lib/plugin.js, then there is the code

  if (mongoose.Query.prototype.deepPopulate == null) {
    patchMongooseQuery(mongoose)
  }

but, as if there is no mongoose.Query object in mongoose 4.0.1(may be 4.x.x), so it throw error: “Cannot read property ‘prototype’ of undefined”–as the code, mongoose.Query not be checked if it is null。but the version @1.1.0 is work for mongoose 4.x.x, may be because the dependence is mongoose@>=3.6.0, but @2.0.0 the is depend on mongoose@>4.0.0 so, wish it is help, and expect to fix it , mongoose-deep-populate is awesome work~

[buunguyen]

Did you load mongoose-deep-populate correctly per 2.0 breaking change? That is:

var deepPopulate = require('mongoose-deep-populate')(mongoose)

[buunguyen]

Agreed. I’ll highlight that.