MongoDB: useUnifiedTopology about mikro-orm HOT 4 CLOSED

Thanks for the report. Tried to upgrade mongodb to 3.3 and use the new flag, but there is a bug actually that breaks one test - isConnected() method will always return true now with the new topology enabled.

https://jira.mongodb.org/browse/NODE-2147

I'll enable this once that one is fixed.

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since 3.0.0-alpha.29 you can use driverOptions to append anything to driver configuration:

return MikroORM.init<MongoDriver>({
  entities: [...],
  dbName: '...',
  type: 'mongo',
  driverOptions: { useUnifiedTopology: true },
});

also tagging @seiyria as he was asking for this in the PR.

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So the issue is finally fixed in v3.3.4.

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Also this might be seen as a breaking change (passing the flag will require dependency update that won't be automatic as it's a peer dependency). So I'll rather leave this for v3, which will come in few weeks.

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