在Map中设置ImmutableJS进行深度比较

Question

I have two deeply nested data objects, such that:

myMap.get("dataKey") === maybeNewData // false
Immutable.is(myMap.get("dataKey"), maybeNewData) //maybe true

I want to replace myMap.get("dataKey") with maybeNewData only if some of the nested values changed. Is there a syntactically precise way to do this? For example (method doesn't exist):

const maybeNewMap = myMap.setIfDeepDifferent("dataKey", maybeNewData);

Or do I have to do it like this?:

if (!Immutable.is(myMap.get("dataKey"), maybeNewData)) {
  maybeNewMap = myMap.set("dataKey", maybeNewData);
}

Answer 1

I found a solution which is slightly better: using update provides a place for the .is check:

const maybeNewMap = myMap.update("dataKey", (data) => {
  return !Immutable.is(data, maybeNewData) ? maybeNewData : data;
});

I'm still curious if there is a more succinct way to express this.