mapGetters.ts

		const mapBranchesGetter = <G extends keyof BranchesStore>(
			getter: G
		): BranchesStore[G] => {
			return this.context.rootGetters[`branches/${getter}`]
		}
		const getBranch = mapBranchesGetter('getBranch')

		const mapGetter = <S, G extends keyof S>(namespace: string, getter: string): S[G] => {
			return this.context.rootGetters[`${namespace}/${getter}`]
		}
		const gB = mapGetter<BranchesStore, 'getBranch'>('branches', 'getBranch')

		const mapGetter = <S, G extends keyof S>(store: S, getter: G): S[G] => {
			return this.context.rootGetters[`${(store as any).namespace}/${getter}`]
		}
		const getBranch = mapGetter(BranchesStore, 'getBranch')

		interface Store {
			namespace: string
		}
		const mapGetter = <S>(store: Store) => <G extends keyof S>(
			getter: G
		): S[G] => this.context.rootGetters[`${store.namespace}/${getter}`]

		const mapBranchesGetter = mapGetter<BranchesStore>(BranchesStore)
		const getBranch = mapBranchesGetter('getBranch')

		const mapGetter = <S>(namespace: string) => <G extends keyof S>(
			getter: G
		): S[G] => this.context.rootGetters[`${namespace}/${getter}`]
		const getBranch = mapGetter<BranchesStore>('branches')('getBranch')