FileInfo.format.ps1xml

<Configuration>
    <SelectionSets>
        <SelectionSet>
            <Name>FileSystemTypes</Name>
            <Types>
                <TypeName>System.IO.DirectoryInfo</TypeName>
                <TypeName>System.IO.FileInfo</TypeName>
            </Types>
        </SelectionSet>
    </SelectionSets>

    <!-- ################ GLOBAL CONTROL DEFINITIONS ################ -->
    <Controls>
        <Control>
            <Name>FileSystemTypes-GroupingFormat</Name>
                    <CustomControl>
                        <CustomEntries>
                            <CustomEntry>
                                <CustomItem>
                                    <Frame>
                                        <LeftIndent>4</LeftIndent>
                                        <CustomItem>
                                            <Text AssemblyName="System.Management.Automation" BaseName="FileSystemProviderStrings" ResourceId="DirectoryDisplayGrouping"/>
                                            <ExpressionBinding>
                                              <ScriptBlock>
                                                  $_.PSParentPath.Replace("Microsoft.PowerShell.Core\FileSystem::", "")                                                  
                                              </ScriptBlock>
                                            </ExpressionBinding>
                                            <NewLine/>
                                        </CustomItem> 
                                    </Frame>
                                </CustomItem>
                            </CustomEntry>
                        </CustomEntries>
            </CustomControl>
        </Control>
    </Controls>
    
    <!-- ################ VIEW DEFINITIONS ################ -->

    <ViewDefinitions>
       <View>
            <Name>children</Name>
            <ViewSelectedBy>
                <SelectionSetName>FileSystemTypes</SelectionSetName>
            </ViewSelectedBy>
            <GroupBy>
                <PropertyName>PSParentPath</PropertyName> 
                <CustomControlName>FileSystemTypes-GroupingFormat</CustomControlName>  
            </GroupBy>
            <TableControl>
                <TableHeaders>
                   <TableColumnHeader>
                      <Label>Mode</Label>
                      <Width>8</Width>
                      <Alignment>left</Alignment>
                   </TableColumnHeader>
                    <TableColumnHeader>
                        <Label>LastWritten</Label>
                        <Width>15</Width>
                    </TableColumnHeader>
                    <TableColumnHeader>
                        <Label>Length</Label>
                        <Width>10</Width>
                        <Alignment>right</Alignment>
                    </TableColumnHeader>
                    <TableColumnHeader/>
                </TableHeaders>
                <TableRowEntries>
                    <TableRowEntry>
                        <Wrap/>
                        <TableColumnItems>
                            <TableColumnItem>
                                <PropertyName>Mode</PropertyName>
                            </TableColumnItem>
                            <TableColumnItem>
                                <ScriptBlock>
                                    [Humanizer.DateHumanizeExtensions]::Humanize($_.LastWriteTime,$false)
                                </ScriptBlock>
                            </TableColumnItem>
                            <TableColumnItem>
                                <ScriptBlock>
                                    if (-not $_.PSIsContainer) { [Humanizer.ByteSizeExtensions]::bytes($_.Length).ToString(0.00)} 
                                </ScriptBlock>
                            </TableColumnItem>
                            <TableColumnItem>
                                <PropertyName>Name</PropertyName>
                            </TableColumnItem>
                        </TableColumnItems>
                    </TableRowEntry>
                </TableRowEntries>
            </TableControl>
        </View>
    </ViewDefinitions>
</Configuration>