How to create object with type alias in TypeScript?

Question

new BaseListState<BrandCriteria, Brand>()

This is working and I add

export type BrandListState = BaseListState<BrandCriteria, Brand>;

then

new BrandListState()

This is not allowed. Any way to fix this problem?

You've only declared a type. To new it, you need to have a constructor, too. Have a look at the error 'classes' in the RxJS codebase. They have both a type and a ctor: github.com/ReactiveX/rxjs/blob/… — cartant
– cartant, Commented May 5, 2020 at 7:09

JTech · Accepted Answer · 2021-10-06 23:44:50Z

6

You're using a Type Alias (see doco here) which doesn't have constructor, so it can't be created with new. You need to create class for this

class BrandListState extends BaseListState<BrandCriteria, Brand> {}

JTech

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answered May 5, 2020 at 7:12

Damian Plewa

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