Typescript: make ObservableMap assignable to ES6 Map

[Strate]

As for now, ObservableMap<T> is not assignable to ES6 Map<string, T>, due to incompatibles of some methods, at least because:

Type 'ObservableMap<T>' is not assignable to type 'Map<string, T>'.
      Types of property 'delete' are incompatible.
        Type '(key: string) => void' is not assignable to type '(key: string) => boolean'.
          Type 'void' is not assignable to type 'boolean'.

It sould be good to make ObservableMap interface be compatible to Map, for refactoring purposes.

[mweststrate]

Good point. I'll update it

[valoricDe]

Hi, my editor tells me that:

Error:(6, 2) TS2322: Type 'ObservableMap<{}>' is not assignable to type 'Map<string, ITick>'.
 Types of property 'forEach' are incompatible.
 Type '(callback: (value: {}, key: string, object: IKeyValueMap<{}>) => void, thisArg?: any) => void' is not assignable to type '(callbackfn: (value: ITick, index: string, map: Map<string, ITick>) => void, thisArg?: any) => void'.
 Types of parameters 'callback' and 'callbackfn' are incompatible.
 Type '(value: ITick, index: string, map: Map<string, ITick>) => void' is not assignable to type '(value: {}, key: string, object: IKeyValueMap<{}>) => void'.
 Types of parameters 'map' and 'object' are incompatible.
 Type 'IKeyValueMap<{}>' is not assignable to type 'Map<string, ITick>'.
 Property 'clear' is missing in type 'IKeyValueMap<{}>'.

[mweststrate]

@Valorize what is the code you get the error on, and the variable definition. Which version of typescript? (in your IDE, ide's sometimes pick a different version then you intended to compile with)

[arvind1234]

Hi, I am unable to assign ObservableMap object to Map. I see the following error when I try to assign:
Argument of type 'ObservableMap' is not assignable to parameter of type 'Map<string, Foo>'.
Property '[Symbol.toStringTag]' is missing in type 'ObservableMap'.

I am basically trying to pass an ObservableMap object to a function that is expecting a Map<string, Foo>. I also tried doing observableMapObj.toJS() - but still hitting the same typescript error. Any pointers on how I can get this to work?

I am running TS version 2.5.3

[eddiegroves]

I've come across the same thing @arvind1234 and I've raised #1204 to ask if this should still work.