decorator.ts

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utility_types.ts

api_service.ts

type_guard.ts

generic_constraint.ts

union_types.ts

mapped_type.ts

decorator.ts

template_literal.ts

conditional_type.ts

assertion.ts

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decorator.ts

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@Injectable()↵

class UserService {↵

constructor(@Inject(DB) private db: Database) {}↵

async find(id: string) { return this.db.query(id); }↵

}

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Related Exercises

utility_types.ts api_service.ts type_guard.ts generic_constraint.ts union_types.ts mapped_type.ts