Demonstration of the typescript type instantiation error when stubbing a method in mikro-orm
- Node 20.8.1
- Npm 10.1.0
- Typescript 5.2.2
Tested and reproduced also with other versions of Node (down to 18.2.1)
npm test or tsc
src/index.spec.ts:48:5 - error TS2589: Type instantiation is excessively deep and possibly infinite.
48 sinon.stub(mikro.em, 'find').withArgs(Item).resolves([expected]);
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The same error happens with other methods of the EntityManager like findOne or count. Probably anything that uses the FilterQuery<Entity> type in the arguments.
The error happens only when using the withArgs method on the stub, other methods to conditionally control the stub, like onCall, are not affected.