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mobx-state-tree

Computed views as functions without arguments instead of getters

If I re-write the example in the Views section of the MST's README file, but using a normal function without arguments instead of a getter, will it still be treated as a computed value with same benefits as using a getter?

const UserStore = types
    .model({
        users: types.array(User)
    })
    .views(self => ({
        // vs. 'get amountOfChildren()'...
        getAmountOfChildren() {
            return self.users.filter(user => user.age < 18).length
        },
    }))

Sorry I'm sure this is a dumb question - it's just for some reason I've never liked those getters too much, and I'm trying FlowType and it doesn't seem to like them either...

Solution

  • No it won't, usually functions accept parameters, and getters does'nt. that's why getters can be memoized if watched by a reaction, and function without args no :)