var mongoose = require("mongoose"); var Schema = mongoose.Schema; var autoInc = require("mongoose-auto-increment"); const TransactionSchema = new Schema({ _id: Number, buyerid: { type: String }, sellerid: { type: String }, ontransaction: { type: Boolean } }); autoInc.initialize(mongoose.connection); TransactionSchema.plugin(autoInc.plugin, "transaction"); module.exports = mongoose.model("transaction", TransactionSchema);