Each category of pipes has an exported module. And one module imports all these modules.
NgAggregatePipesModuleNgArrayPipesModuleNgBooleanPipesModuleNgMathPipesModuleNgObjectPipesModuleNgStringPipesModuleNgPipesModule(imports all the module above)
import { NgModule } from '@angular/core';
import { NgArrayPipesModule, NgStringPipesModule } from 'angular-pipes';
@NgModule({
imports: [
NgArrayPipesModule,
NgStringPipesModule
]
})
export class MyApplicationModule {}