#43 scroll position

[gitbreaker222]

Before

Various use cases exist, where the scroll-position is not as expected - closes #43

After

A new method scrollToIndex is exposed to control the scroll-position from the consumer

This resolves following issues and PRs:

closes #15
closes #28
closes #30
closes #31 (PR)
closes #32
closes #60 (PR; similar to #15)

[gitbreaker222]

looking at #44 I think I should keep the height map part and test with variable-height-items 🤔

edit: tested again and removed the fixed height: with and without the height-map part the scrollToItem method is unreliable. I think it is best to solve these things step by step:

• scroll-position for lists with fixed-height-items
• height-map for variable height items

[BlueBomberman]

Hi! is this available already?

[gitbreaker222]

@BlueBomberman Unfortunately I haven't got any response from Rich Harris on this since about 6 months. Maybe I can ping somebody else from the svelte team? Let's find out:

@Conduitry are you maybe able to review/merge/assign this PR? It would resolve 5 issues 1 other PR 🌟

edit 2021-06-18
or @pngwn maybe?

[stalkerg]

@gitbreaker222 I suppose to make a fork will be much better in its current state.

[juancarrey]

I belive this may also fixes that if items are changed from the consumer (items filtered) the scroll position may out of range leaving the canvas empty.

[mellson]

I would really love to see this PR merged if it's possible. Is there any way we can help this component going forward? Are you looking for active maintainers etc?

[gitbreaker222]

community-edition package finally available. Thx again @mellson and sry for the long wait everyone
https://www.npmjs.com/package/svelte-virtual-list-ce

There will be some more upcoming changes to the readme and other maintenance stuff maybe :)