Description
I'm submitting a ... (check one with "x")
[ ] bug report => search github for a similar issue or PR before submitting
[x] feature request
[ ] support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question
Current behavior
Currently each Input or Output must be explicitly declared in the component to allow its usage.
Expected behavior
I'd like to have any way to pass Inputs/Outputs to a component in the template without declaring them first. This is allowed in React with props spread and allows techniques like Higher Order Components.
<my-component [prop1]="prop1" {...otherInputs} ></my-component>What is the motivation / use case for changing the behavior?
Declaring each Input/Output is a problem when wrapping some component to extend its behaviour or to hide the component when dealing with an external library. It requires mapping each of the wrapped component Inputs/Outputs and it's very tedious and error prone. Besides any change in the wrapped component API would require touching the wrapper component.