'How do I specify the types for the content (values) of a JS object (i.e. map)?

I want to specify that a Javascript Object, used as a map, contains only a certain type.

For example:

function doSomethingWithUrlQueryParams(queryObj: Object)

javascript flowtype

Solution 1:^[1]

You can use do it like this:

function doSomethingWithUrlQueryParams(queryObj: {[key: string]: string})

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Solution	Source
Solution 1	Otto