Uncaught Error: Type NgxJsonapiModule does not have 'ɵmod' property.

[GertjanJ]

Package looks very promising! Only thing is that I can't use the package with Angular 11. When importing this module the following error appears:

zone-evergreen.js:171 Uncaught Error: Type NgxJsonapiModule does not have 'ɵmod' property.
    at getNgModuleDef (core.js:2124)
    at recurse (core.js:24921)
    at recurse (core.js:24932)
    at registerNgModuleType (core.js:24917)
    at new NgModuleFactory$1 (core.js:25031)
    at compileNgModuleFactory__POST_R3__ (core.js:28586)
    at PlatformRef.bootstrapModule (core.js:28824)
    at HTMLDocument.<anonymous> (main.ts:12)
    at ZoneDelegate.invokeTask (zone-evergreen.js:399)
    at Zone.runTask (zone-evergreen.js:167

[GertjanJ]

70% building 588/588 modules 0 active
ERROR in node_modules/ngx-jsonapi/ngx-jsonapi.module.d.ts:4:22 - error NG6002: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class.

This likely means that the library (ngx-jsonapi) which declares NgxJsonapiModule has not been processed correctly by ngcc, or is not compatible with Angular Ivy. Check if a newer version of the library is available, and update if so. Also consider checking with the library's authors to see if the library is expected to be compatible with Ivy.

[GertjanJ]

Oke so after a lot of searching I found out that there is this thing called ngcc (Angular compatibility compiler). It converts non-ivy libraries into packages ivy can work with.

When adding "postinstall": "ngcc" to scripts in package.json then after each npm install/ng add, all non-ivy packages will be converted. Including this one.

"scripts": {
    "postinstall": "ngcc"
  }