export interface MapObject {
(key: string): TaskDaylist
}
let myMap: MapObject = {};
But I encountered a type error
Type '{}' is not compatible with type '(s: string) => TaskDaylist'. Type '{}' does not match the signature '(s: string): TaskDaylist'.
I attempted to make it optional using ?:
(key: string)?: TaskDaylist
Is there an alternative way to define the map and initialize it with an empty object?
Utilizing type assertion will help in achieving this:
let map: MapObj = {} as MapObj;
Alternatively, you can simply do:
let map = {} as MapObj;
The data type specified for MapObj is for a function, something like this:
let map: MapObj = function (s: string) {
return {};
};
If you only require an object that maps strings (keys) to TaskDaylist (values), it should be defined as follows:
interface MapObj {
[s: string]: TaskDaylist;
}
Further information can be found in Indexable Types.
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