Upgrade ember-composable-helpers to version 5.x. This version contains the pick-helper which makes composition in the template layer easier with Octane.
{{!-- this is usually hard to do with Octane --}}
<input {{on "input" (pick "target.value" this.updateText)}} .../>
Version 5.x also fixes a regression with sort-by that according to @johncowen was the reason why the version was pinned to 4.0.0 at the moment.
Version 5 of ember-composable-helpers removes the contains-helper in favor of includes which I changed all occurences for.
Michael Klein