equality-test.js

const { is, fromJS } = require('immutable')

const nested = fromJS({ a: { b: { c: [ 3, 4, 5 ] } } })

const nestedWithoutImmutable = nested.setIn(['a', 'b', 'c'], 'foo')
const nestedWithImmutable    = nested.setIn(['a', 'b', 'c'], fromJS('foo'))

console.log("Is it equal? " + is(nestedWithoutImmutable, nestedWithImmutable));

console.log("\nWithout immutable setter\n" + nestedWithoutImmutable);
console.log("\nWith immutable setter\n" + nestedWithImmutable)