sheetjs/docbits/54_shobject.md

Worksheet Object

In addition to the base sheet keys, worksheets also add:

• ws['!cols']: array of column properties objects. Column widths are actually stored in files in a normalized manner, measured in terms of the "Maximum Digit Width" (the largest width of the rendered digits 0-9, in pixels). When parsed, the column objects store the pixel width in the wpx field, character width in the wch field, and the maximum digit width in the MDW field.

• ws['!merges']: array of range objects corresponding to the merged cells in the worksheet. Plaintext utilities are unaware of merge cells. CSV export will write all cells in the merge range if they exist, so be sure that only the first cell (upper-left) in the range is set.

• ws['protect']: object of write sheet protection properties. The password key specifies the password. The writer uses the XOR obfuscation method. The following keys control the sheet protection (same as ECMA-376 18.3.1.85):

key	functionality disabled if value is true
selectLockedCells	Select locked cells
selectUnlockedCells	Select unlocked cells
formatCells	Format cells
formatColumns	Format columns
formatRows	Format rows
insertColumns	Insert columns
insertRows	Insert rows
insertHyperlinks	Insert hyperlinks
deleteColumns	Delete columns
deleteRows	Delete rows
sort	Sort
autoFilter	Filter
pivotTables	Use PivotTable reports
objects	Edit objects
scenarios	Edit scenarios

Chartsheet Object

Chartsheets are represented as standard sheets. They are distinguished with the !type property set to "chart".

The underlying data and !ref refer to the cached data in the chartsheet. The first row of the chartsheet is the underlying header.