Spread + bind:value in <svelte:component> throw console errors when typing in input box.

[Kiho]

When type something in this REPL throws error in console.
https://svelte.technology/repl?version=2.5.0&gist=0f246a56ffc46239e1d1fc1448f18d4a
If I remove {...settings} in Container.html then it works fine.
Same code in 2.4.3 works without any issues but does not work with 2.4.4 or later.

[Kiho]

Looks like problem is on this code.

        var switch_instance_changes = {};
	var switch_instance_changes = changed.settings && getSpreadUpdate(switch_instance_spread_levels, [
		ctx.settings
	]);

Maybe we can fix it like this

	var switch_instance_changes = {};
	if (changed.settings) {
		switch_instance_changes = getSpreadUpdate(switch_instance_spread_levels, [
			ctx.settings
		]);
	}

[Kiho]

I found workaround... add computed prop then work.

	computed:{
		settings: (all) => { 
			return all.settings;
		},
.......

https://svelte.technology/repl?version=2.5.0&gist=47c0e86836c4088475dccecbcfc75153

[Rich-Harris]

fixed in 2.6.2, thanks