Plugins
addSubRows
addSubRows defines the data for deriving the sub-rows of a row. It is commonly used with addExpandedRows to visualize sub-rows.
The id of a sub-row is in the format {parentId}>{id}. A nested sub-row can be referred to by concatenating the ids of its parent rows to the top-level row.
Options
Options passed into addSubRows.
const table = createTable(data, {
  sub: addSubRows({ ... }),
});
 children: string | (item) => Item[]
Defines child items. Child items must be an array of items with same type as the parent item.
If children is a string, the child items must exist as a direct property on each data item. If a nested property or computed property is needed, pass a function that receives a data item and returns an array of child items.
If the child items returned is undefined or [], no sub-rows will be generated for the row.
Column Options
Options passed into column definitions.
const columns = table.createColumns([
  table.column({
    header: 'Name',
    accessor: 'name',
    plugins: {
      sub: { ... },
    },
  }),
]);
Nothing here so far.
Prop Set
Extensions to the view model.
Subscribe to .props() on the respective table components.
{#each $headerRows as headerRow (headerRow.id)}
  <Subscribe rowProps={headerRow.props()} let:rowProps>
    {rowProps.sub} <!-- HeaderRow props -->
    {#each headerRow.cells as cell (cell.id)}
      <Subscribe props={cell.props()} let:props>
        {props.sub} <!-- HeaderCell props -->
      </Subscribe>
    {/each}
  </Subscribe>
{/each}
Nothing here so far.
Plugin State
State provided by addSubRows.
const { headerRows, rows, pluginStates } = table.createViewModel(columns);
const { ... } = pluginStates.sub;
Nothing here so far.
Interactions with other plugins
 addSortBy
When addSubRows is defined before addSortBy, all sub-rows will be sorted within each group.
When addSubRows is defined after addSortBy, only the top-level rows will be sorted.
 addColumnFilters
When addSubRows is defined before addColumnFilters, all sub-rows will be searched for matching values. If a row has a sub-row that matches the filter, it will not be hidden even if it does not match the filter itself.
When addSubRows is defined after addColumnFilters, only the top-level rows will be searched for matching values.
 addTableFilter
When addSubRows is defined before addTableFilter, all sub-rows will be searched for matching values. If a row has a sub-row that matches the filter, it will not be hidden even if it does not match the filter itself.
When addSubRows is defined after addTableFilter, only the top-level rows will be searched for matching values.
Examples
addSubRows does not provide any visual feedback. Refer to 
addExpandedRows for examples.