I often use Object.entries so that I can use Array.filter/map/foreach on an object, but then I need to use Array.reduce to hack it back into an object. Object.fromEntries solves this.
Yeah this is what I’m most excited for. filter and map and my preferred array traversal methods. reduce can be awkward though, and people abuse it by using it to replace or combine filter and map. fromEntries almost makes reduce unnecessary when working with objects.