scrollToEnd throws an error when called after a list goes from >0 to 0 items

[stevengoldberg]

Current behavior

When a re-render causes the FlashList's data array to change from from >0 length to 0 length, calling scrollToEnd throws:

TypeError: Cannot read properties of undefined (reading 'x')
    at t.getOffsetForIndex (@shopify/flash.list:3:11758)
    at t.scrollToIndex (@shopify/flash.list:3:21974)
    at t.scrollToEnd (@shopify/flash.list:3:22939)
    at t.scrollToEnd (@shopify/flash.list:3:56165)

Expected behavior

scrollToEnd should have no effect when the list is empty.

To Reproduce

Repro here

Press the "toggle data" to set state and produce the error.

Platform:

• [ x ] iOS
• [ x ] Android

Environment

1.6.4

Tasks

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