Error building ngx-webstorage after upgrade to Angular 9.1

[dorje42]

Versions (please complete the following information):

• NgxWebstorage: 5.0.0
• Angular: 9.1.0

Describe the bug
I updatet my project to Angular 9.1.
When I build my project, I get the following errors:

`
node_modules/ngx-webstorage/lib/core/strategyCache.d.ts:14:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 2 type argument(s).

14 static ɵfac: ɵngcc0.ɵɵFactoryDef;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
node_modules/ngx-webstorage/lib/strategies/localStorage.d.ts:15:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 2 type argument(s).

15 static ɵfac: ɵngcc0.ɵɵFactoryDef;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
node_modules/ngx-webstorage/lib/strategies/sessionStorage.d.ts:15:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 2 type argument(s).

15 static ɵfac: ɵngcc0.ɵɵFactoryDef;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
node_modules/ngx-webstorage/lib/strategies/inMemory.d.ts:16:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 2 type argument(s).

16 static ɵfac: ɵngcc0.ɵɵFactoryDef;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
node_modules/ngx-webstorage/lib/services/strategyIndex.d.ts:21:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 2 type argument(s).

21 static ɵfac: ɵngcc0.ɵɵFactoryDef;

`

[dorje42]

After removing all node_modules and install it clean again it works.

[tsanko]

NgxWebstorage: 6.0.0
Angular: 9.1.12

Compiling ngx-webstorage : module as esm5
Error: Error on worker #3: Error: getInternalNameOfClass() called on a non-ES5 class: expected StrategyCacheService to have an inner class declaration

[shruti-ahuja]

NgxWebstorage: 6.0.0
Angular: 9.1.12

Compiling ngx-webstorage : module as esm5
Error: Error on worker #3: Error: getInternalNameOfClass() called on a non-ES5 class: expected StrategyCacheService to have an inner class declaration

Running into similar issue, any resolve?