zIndex choices with drawerType="slide"

[shinnoki]

Hello, I'm using react-navigation and tried to make editable drawer with animations like Slack App.

This is implemented by drawerType="slide", position: 'absolute' in drawer content style and animating width. Actually I found drawer comes backward and patched DrawerLayout.js as below.

// drawerType === 'front'
(drawerType === 'front' || drawerType === 'slide')
  ? styles.containerOnBack
  : styles.containerInFront,

I understand this patch happened to match my use case but not to others, so my proposal is adding either new prop like drawerOverlap or drawerType="slide-front".