Demonstrating the differences between a true merge and Object.assign
const merge = require('lodash.merge')
const assign = Object.assign
const stateA = { a : { f: 1 } }
const stateB = { a : { g: 2 } }
console.log('merge:', merge( {} , stateA, stateB ))
console.log('assign:', assign( {} , stateA, stateB ))
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