import mongodb error codes 'MONGODB_ERROR_CODES ' in javascript

Wasit_Shafi · January 28, 2025, 8:28am

I am working on express backend app with Mongoose as ODM. I just want to know if is there any built-in way to import the error codes/types so that we compare or use it something like below code snippet.

import { WriteConflict } from 'mongodb' 

if (errorCode ===  WriteConflict) {
 // do someting
}

Instead of using magic number (error code)
``
if (errorCode === 112) {
// do someting
}

or creating a new file in our code base manually and use that across application like below (not preferred, if there is any way to import directly from the MongoDB library); 
eg: mongodb.error.ts file

```export const MONGODB_ERROR_CODES = {
	HostUnreachable: 6,
	HostNotFound: 7,
	AuthenticationFailed: 18,
	NetworkTimeout: 89,
	ShutdownInProgress: 91,
	PrimarySteppedDown: 189,
	ExceededTimeLimit: 262,
	SocketException: 9001,
        ...
        ...

} as const satisfies Record<string, number>;

I have checked the MongoDB native nodejs library source code and found that error codes are not exported from the index.ts file see below links

https://github.com/mongodb/node-mongodb-native/blob/654069fc1750b6c3336f1002e3d3fb18bbc1451d/src/index.ts#L88

github.com

mongodb/node-mongodb-native/blob/654069fc1750b6c3336f1002e3d3fb18bbc1451d/src/index.ts#L120


      
            UnorderedBulkOperation
          };
          
          // enums
          export { BatchType } from './bulk/common';
          export { AutoEncryptionLoggerLevel } from './client-side-encryption/auto_encrypter';
          export { GSSAPICanonicalizationValue } from './cmap/auth/gssapi';
          export { AuthMechanism } from './cmap/auth/providers';
          export { Compressor } from './cmap/wire_protocol/compression';
          export { CURSOR_FLAGS, CursorTimeoutMode } from './cursor/abstract_cursor';
          export { MongoErrorLabel } from './error';
          export { ExplainVerbosity } from './explain';
          export { ServerApiVersion } from './mongo_client';
          export { ReturnDocument } from './operations/find_and_modify';
          export { ProfilingLevel } from './operations/set_profiling_level';
          export { ReadConcernLevel } from './read_concern';
          export { ReadPreferenceMode } from './read_preference';
          export { ServerType, TopologyType } from './sdam/common';
          
          // Helper classes
          export { ReadConcern } from './read_concern';

error.ts file

https://github.com/mongodb/node-mongodb-native/blob/654069fc1750b6c3336f1002e3d3fb18bbc1451d/src/error.ts#L38C14-L38C34

Other Related links:

error_codes.err file:

https://github.com/mongodb/mongo/blob/a21c7c7e0d0dcd7bd9b11d62f95ec6496bc617e8/src/mongo/base/error_codes.err

lib_db.js.html file

https://github.com/mongodb/node-mongodb-native/blob/654069fc1750b6c3336f1002e3d3fb18bbc1451d/docs/3.0/api/lib_db.js.html#L3006