Immutable.js: Get, Set, Update and Delete Data from MapsNow we know how to create an Immutable Map, we’ll take a look at how we can get data from it, and how to add and delete items from it, all without mutating it. Note that the usual caveat applies: Immutable does not change a Map with any operation, so whenever you see phrases such as ‘delete an item from a Map’, the mutation occurs in a copy of the Map being operated on, which is returned from the
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