Material-table: isLoading doesn't work properly

[jakeleventhal]

Describe the bug
If you use the isLoading prop in conjunction with data, the table crashes and says the data can't be null

To Reproduce
Steps to reproduce the behavior:

1. Make a table with data={tableDataVar}
2. Set the isLoading prop to isLoading={!tableDataVar}
3. An error appears saying that data must not be null

Expected behavior
The error should not appear if the isLoading value is set to true

[priemd]

Set your state’s data prop to an empty array. You have a table in your UI expecting it to have data at some point in the form of an array, if the array is empty material-table shows your users a nice no data message which you can also override with localization. For state expecting an array of values generally I have seen you set it to an empty array with initialState.

[mbrn]

Hi @jakeleventhal ,

This is not a bug. You should set a empty array to data. If you want to loading animation you can use data.length === 0 or use another flag on state.