Type 'DeepNullable<K>' does not satisfy the constraint 'WeakKey'

[zervant-konstantin]

I am using:

NodeJS v21.7.1
typescript@5.4.2
jest-mock-extended@3.0.5

When I build project by command tsc I have these errors from ts-essentials, that is the dependency of jest-mock-extended

I understand that errors inside ts-essentials, but it effect to jest-mock-extended.
jest-mock-extended uses old version ts-essentials - ^7.0.3 (latest is 9.4.1)

I created also the issue ts-essentials/ts-essentials#381

Do you have any ideas to fix it?

node_modules/ts-essentials/dist/types.d.ts:67:13 - error TS2344: Type 'DeepNullable<K>' does not satisfy the constraint 'WeakKey'.
  Type 'symbol | object | (Builtin & object) | Map<unknown, unknown> | WeakMap<symbol | object | null, unknown> | Set<unknown> | WeakSet<symbol | object | null> | unknown[] | Promise<unknown> | null' is not assignable to type 'WeakKey'.
    Type 'null' is not assignable to type 'WeakKey'.

67   ? WeakMap<DeepNullable<K>, DeepNullable<V>>
               ~~~~~~~~~~~~~~~

node_modules/ts-essentials/dist/types.d.ts:71:13 - error TS2344: Type 'DeepNullable<U>' does not satisfy the constraint 'WeakKey'.
  Type 'symbol | object | (Builtin & object) | Map<unknown, unknown> | WeakMap<symbol | object | null, unknown> | Set<unknown> | WeakSet<symbol | object | null> | unknown[] | Promise<unknown> | null' is not assignable to type 'WeakKey'.

71   ? WeakSet<DeepNullable<U>>
               ~~~~~~~~~~~~~~~

node_modules/ts-essentials/dist/types.d.ts:91:13 - error TS2344: Type 'DeepUndefinable<K>' does not satisfy the constraint 'WeakKey'.
  Type 'symbol | object | (Builtin & object) | Map<unknown, unknown> | WeakMap<symbol | object | undefined, unknown> | Set<unknown> | WeakSet<symbol | object | undefined> | unknown[] | Promise<...> | undefined' is not assignable to type 'WeakKey'.
    Type 'undefined' is not assignable to type 'WeakKey'.

91   ? WeakMap<DeepUndefinable<K>, DeepUndefinable<V>>
               ~~~~~~~~~~~~~~~~~~

node_modules/ts-essentials/dist/types.d.ts:95:13 - error TS2344: Type 'DeepUndefinable<U>' does not satisfy the constraint 'WeakKey'.
  Type 'symbol | object | (Builtin & object) | Map<unknown, unknown> | WeakMap<symbol | object | undefined, unknown> | Set<unknown> | WeakSet<symbol | object | undefined> | unknown[] | Promise<...> | undefined' is not assignable to type 'WeakKey'.

95   ? WeakSet<DeepUndefinable<U>>

[Beraliv]

Hey @zervant-konstantin!

First of all, sorry for this inconvenience!

I've released ts-essentials@9.4.2 with TypeScript 5.3 and 5.4 support and now it is expected to be working.

Kindly ask to verify it on your side and come back to me should something doesn't work on your side

[kpachbiu88]

Hey @zervant-konstantin!

First of all, sorry for this inconvenience!

I've released ts-essentials@9.4.2 with TypeScript 5.3 and 5.4 support and now it is expected to be working.

Kindly ask to verify it on your side and come back to me should something doesn't work on your side

Thank you, for fast solution!

[timdavish]

Adding a comment just in case the above doesn't notify ^^

See #131