Error TS6200 & Error TS2403: Definitions of the following identifiers conflict with those in another file

user_14491495 0
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I'm trying to set up a node project in typescript.

Two files causing errors :

  1. node_modules@types\mongoose\index.d.ts
  2. node_modules\mongoose\index.d.ts

[errors][1] [1]: https://i.stack.imgur.com/46vDU.jpg

node_modules/@types/mongoose/index.d.ts:79:1 - error TS6200: Definitions of the following identifiers conflict with those in another file: DocumentDefinition, FilterQuery, UpdateQuery, NativeError, Mongoose, CastError, ConnectionOptions, Collection, Connection, disconnected, connected, connecting, disconnecting, uninitialized, Error, QueryCursor, VirtualType, Schema, SchemaTypeOpts, Subdocument, Array, DocumentArray, Buffer, ObjectIdConstructor, Decimal128, Map, Aggregate, SchemaType, Document, ModelUpdateOptions

79 declare module "mongoose" {


node_modules/mongoose/index.d.ts:1:1
 1 declare module "mongoose" {
   ~~~~~~~
 Conflicts are in this file.

node_modules/@types/mongoose/index.d.ts:226:14 - error TS2403: Subsequent variable declarations must have the same type.  Variable 'SchemaTypes' must be of type 'typeof Types', but here has type 'typeof Types'.

226   export var SchemaTypes: typeof Schema.Types;
                  ~~~~~~~~~~~
mongoose typescript node.js
4 Answers
user_48092970

I just had the same issue and fixed it by adding "skipLibCheck": true to my tsconfig.json. So I didn't have to downgrade Mongoose.

user_100279600

nevermind I downgraded mongoose by running 'npm i mongoose@5.10.19', it worked

user_144914950

If someone is still looking for a solution and the points above did not help, uninstalling @types/mongoose-unique-validator solved my build errors.

user_92609550
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