Presently, the application has the following Interface. Is it feasible to generate a record type PropA based on the key value provided?
For example: if I input "apple" as the record key, it should require the IApple interface as the value, otherwise it should expect IModel.
interface Itest {
propsA: Record<string,IModel>
}
Looking for a way to define an object with specific types for its keys and values? In this scenario, all keys of type string should have values of type IModel, except for the key "apple" which should be of type IApple.
If IApple is a subtype of IModel, the solution is quite straightforward. By using Record<string, IModel> in conjunction with & {apple?: IApple}, we ensure that all properties are of type IModel, while also specifying that the apple property must be of type IApple, with the optionality denoted by ?.
interface Itest {
propsA: Record<string, IModel> & {apple?: IApple}
}
For cases where IApple and IModel are unrelated types, things get more complex as the Record<string, IModel> declaration covers all keys including apple, resulting in an error "Property 'apple' is incompatible with index signature." To overcome this, it's necessary to specify that the value is IModel for every key except for apple.
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