What does this change? The appshell relies on an innerwidth calculation to position the sidebar, this transitions in the sidebar to display only after innerwidth is not 0 - therefore avoiding 'loading jank'

Why? better ui experience

How? waits for the variable to be dynamically set on initial page load and the transitions in the sidebar

Related issues:

283

Does this introduce new dependencies? no

How is it tested? Storybook

How is it documented? Storybook

Are light and dark themes considered? n/a

Is it complete? y

[x] Have you included changeset file?
[x] If this adds a new component, is it exported via index.js?

Greater-London-Authority / ldn-viz-tools

Fix/sidebar jank #285

283