I understand the normal Map<string, string>
format. But i have seen some people use { [k: string]: string }
for the same use case?
Are they same or different? i cannot find a proper documentation regarding it's use cases.
is it possible to convert one to another?
Does it have to do something with the object de-structuring ?
In a basic sense, { [k: string]: string }
is for an object, and Map<string, string>
is for a Javascript Map primitive, which is not exactly the same.
For example, you could do Map<object, string>
, because a Map can use an object as a key. However, { [k: object]: string }
immediately throws an error, because javascript objects cannot use objects as their keys.
This does not have to do with destructuring, but rather with the difference between a standard javascript Object and a Map. I'm not sure what you mean when you say you've seen them used interchangeably, as this typescript playground throws an error when mixing them up.
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