What is mapState?

mapState is a helper that simplifies creating a computed property that reflects the value of a given state . Similarly: mapGetters is a helper that simplifies creating a computed property that reflects the value returned by a given getter.

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What are Vuex getters?

Getters are a part of Vuex store and they are used to calculate data based on store state . … They cache data and smartly update themselves when the state changes; They can return functions, so that it’s possible to pass additional arguments to calculate data based on them.

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