Conflict with NestJS

[jeremythille]

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If I add the MEXP plugin to my Mongoose schema, then my Nest server can't start and crashes with the following error :

.\node_modules\@nestjs\mongoose\mongoose.utils.js:4 return ${JSON.stringify(model)}Model; ^

TypeError: Converting circular structure to JSON at JSON.stringify () at Object.getModelToken (.\node_modules\@nestjs\mongoose\mongoose.utils.js:4:20) at Object.exports.InjectModel (.\node_modules\@nestjs\mongoose\mongoose.decorators.js:5:67)

If I do not add the plugin, the server works and starts.

I have used MEXP for years in other Node projects, it has always worked. Now I'm switching to NestJS and I get this error. Here's the relevant code

const mexp = require("mongoose-elasticsearch-xp"),
        AdSchema = new mongoose.Schema({ ........ });

AdSchema.plugin(mexp, {  // If I comment out these lines, the code works.
	client: new elasticsearch.Client(esOptions),
	hosts: ['localhost:9200']
});

Using dependencies :

"dependencies": {
    "@nestjs/common": "^4.6.6",
    "@nestjs/core": "^4.6.6",
    "@nestjs/microservices": "^4.6.6",
    "@nestjs/mongoose": "^3.0.1",
    "@nestjs/testing": "^4.6.6",
    "@nestjs/websockets": "^4.6.6",
    "bluebird": "^3.5.1",
    "dotenv": "^5.0.1",
    "elasticsearch": "^14.2.2",
    "express": "^4.16.3",
    "mongoose": "^5.0.16",
    "mongoose-elasticsearch-xp": "^5.4.1",
    "reflect-metadata": "^0.1.12",
    "rxjs": "^5.5.6"
  }