problem

i have noticed, that when you e.g. have a textarea in a component and if you have a $:{} which uses an object that is passed to the component, then this is called on every keystroke, even if there is no change on the data

the $:{} in text-field.svelte should work similar to the one in text-field-with-update-function.svelte and should not be triggered, when there is no change.

as you see in the 3rd example the inputText is always cleared because of the empty value of value.s. this update should not happen in my opinion, because data nor data.s was changed - so this somehow gets triggered bei the input-event

This behavior has started in svelte v3.2.1 i think. If you downgrade the the svelte versions in the package.json to e.g. v3.0.0, it works fine.

how to start

do following in the root-folder npm install an then npm run dev or npm run build

afterwards open index.html in your browser and try to type in the textareas

expected behavior

• every textarea should work as the same
• after it looses focus, the value on the right should be updated

Important files:

• app.svelte instantiates all examples
• files starting with text-field-xxxxx.svelte are all test-cases
• text-field.svelte contains the test-case, that does not work