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It doesn’t make sense to return value from watcher.
Watcher are special reactive hooks which we can utilise to take action on some side-effect, the returned value can’t be utilise. Probably you are looking for computed property.
computed: {
getColumn() {
// return value here
}
}
and in HTML, you can directly use:
<div> Column: { getColumn } </div>
Source:stackexchange.com