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exceljs-lightweight

Excel Workbook Manager - Read and Write xlsx and csv Files. Fork from exceljs/exceljs

1.14.0
latest
Source
npm

Version published: 5 years ago

Weekly downloads: 61; decreased by-75.6%

Maintainers: 1

Weekly downloads

Created: 5 years ago

Source

Exceljs-lightweight

First of all, this repository was forked from exceljs/exceljs with branch 1.12.0 and then replace moment with dayjs to make exceljs more lightweight. The reason that we don't use exceljs with version is 3.3.0 because of the size is big, it tooks around 900KB. So we have to create exceljs-lightweight.

Read, manipulate and write spreadsheet data and styles to XLSX and JSON.

Reverse engineered from Excel spreadsheet files as a project.

中文文档

Installation

npm install exceljs-lightweight

New Features!

Merged Feat configure headers and footers #863. Many thanks to autukill for this contribution.

Contributions

Contributions are very welcome! It helps me know what features are desired or what bugs are causing the most pain.

I have just one request; If you submit a pull request for a bugfix, please add a unit-test or integration-test (in the spec folder) that catches the problem. Even a PR that just has a failing test is fine - I can analyse what the test is doing and fix the code from that.

To be clear, all contributions added to this library will be included in the library's MIT licence.

Backlog

ESLint - slowly turn on (justifyable) rules which should, I hope, help make contributions easier.
Conditional Formatting.
There are still more print-settings to add; Fixed rows/cols, etc.
XLSX Streaming Reader.
Parsing CSV with Headers

Interface

Importing

The default export is a transpiled ES5 version with a Promise polyfill - this offers the highest level of compatibility.

var Excel = require('exceljs-lightweight');
import Excel from 'exceljs-lightweight';

However, if you use this library on a modern node.js version (>=8) or on the frontend using a bundler (or can focus on just evergreen browsers), we recommend to use these imports:

const Excel = require('exceljs-lightweight/modern.nodejs');
import Excel from 'exceljs-lightweight/modern.browser';

Create a Workbook

var workbook = new Excel.Workbook();

Set Workbook Properties

workbook.creator = 'Me';
workbook.lastModifiedBy = 'Her';
workbook.created = new Date(1985, 8, 30);
workbook.modified = new Date();
workbook.lastPrinted = new Date(2016, 9, 27);

// Set workbook dates to 1904 date system
workbook.properties.date1904 = true;

Workbook Views

The Workbook views controls how many separate windows Excel will open when viewing the workbook.

workbook.views = [
  {
    x: 0, y: 0, width: 10000, height: 20000,
    firstSheet: 0, activeTab: 1, visibility: 'visible'
  }
]

Add a Worksheet

var sheet = workbook.addWorksheet('My Sheet');

Use the second parameter of the addWorksheet function to specify options for the worksheet.

For Example:

// create a sheet with red tab colour
var sheet = workbook.addWorksheet('My Sheet', {properties:{tabColor:{argb:'FFC0000'}}});

// create a sheet where the grid lines are hidden
var sheet = workbook.addWorksheet('My Sheet', {properties: {showGridLines: false}});

// create a sheet with the first row and column frozen
var sheet = workbook.addWorksheet('My Sheet', {views:[{xSplit: 1, ySplit:1}]});

Remove a Worksheet

Use the worksheet id to remove the sheet from workbook.

For Example:

// Create a worksheet
var sheet = workbook.addWorksheet('My Sheet');

// Remove the worksheet using worksheet id
workbook.removeWorksheet(sheet.id)

Access Worksheets

// Iterate over all sheets
// Note: workbook.worksheets.forEach will still work but this is better
workbook.eachSheet(function(worksheet, sheetId) {
  // ...
});

// fetch sheet by name
var worksheet = workbook.getWorksheet('My Sheet');

// fetch sheet by id
var worksheet = workbook.getWorksheet(1);

Worksheet State

// make worksheet visible
worksheet.state = 'visible';

// make worksheet hidden
worksheet.state = 'hidden';

// make worksheet hidden from 'hide/unhide' dialog
worksheet.state = 'veryHidden';

Worksheet Properties

Worksheets support a property bucket to allow control over some features of the worksheet.

// create new sheet with properties
var worksheet = workbook.addWorksheet('sheet', {properties:{tabColor:{argb:'FF00FF00'}}});

// create a new sheet writer with properties
var worksheetWriter = workbookWriter.addSheet('sheet', {properties:{outlineLevelCol:1}});

// adjust properties afterwards (not supported by worksheet-writer)
worksheet.properties.outlineLevelCol = 2;
worksheet.properties.defaultRowHeight = 15;

Supported Properties

Name	Default	Description
tabColor	undefined	Color of the tabs
outlineLevelCol	0	The worksheet column outline level
outlineLevelRow	0	The worksheet row outline level
defaultRowHeight	15	Default row height
dyDescent	55	TBD

Worksheet Metrics

Some new metrics have been added to Worksheet...

Name	Description
rowCount	The total row size of the document. Equal to the row number of the last row that has values.
actualRowCount	A count of the number of rows that have values. If a mid-document row is empty, it will not be included in the count.
columnCount	The total column size of the document. Equal to the maximum cell count from all of the rows
actualColumnCount	A count of the number of columns that have values.

Page Setup

All properties that can affect the printing of a sheet are held in a pageSetup object on the sheet.

// create new sheet with pageSetup settings for A4 - landscape
var worksheet =  workbook.addWorksheet('sheet', {
  pageSetup:{paperSize: 9, orientation:'landscape'}
});

// create a new sheet writer with pageSetup settings for fit-to-page
var worksheetWriter = workbookWriter.addSheet('sheet', {
  pageSetup:{fitToPage: true, fitToHeight: 5, fitToWidth: 7}
});

// adjust pageSetup settings afterwards
worksheet.pageSetup.margins = {
  left: 0.7, right: 0.7,
  top: 0.75, bottom: 0.75,
  header: 0.3, footer: 0.3
};

// Set Print Area for a sheet
worksheet.pageSetup.printArea = 'A1:G20';

// Repeat specific rows on every printed page
worksheet.pageSetup.printTitlesRow = '1:3';

// Repeat specific columns on every printed page
worksheet.pageSetup.printTitlesColumn = 'A:C';

Supported pageSetup settings

Name	Default	Description
margins		Whitespace on the borders of the page. Units are inches.
orientation	'portrait'	Orientation of the page - i.e. taller (portrait) or wider (landscape)
horizontalDpi	4294967295	Horizontal Dots per Inch. Default value is -1
verticalDpi	4294967295	Vertical Dots per Inch. Default value is -1
fitToPage		Whether to use fitToWidth and fitToHeight or scale settings. Default is based on presence of these settings in the pageSetup object - if both are present, scale wins (i.e. default will be false)
pageOrder	'downThenOver'	Which order to print the pages - one of ['downThenOver', 'overThenDown']
blackAndWhite	false	Print without colour
draft	false	Print with less quality (and ink)
cellComments	'None'	Where to place comments - one of ['atEnd', 'asDisplayed', 'None']
errors	'displayed'	Where to show errors - one of ['dash', 'blank', 'NA', 'displayed']
scale	100	Percentage value to increase or reduce the size of the print. Active when fitToPage is false
fitToWidth	1	How many pages wide the sheet should print on to. Active when fitToPage is true
fitToHeight	1	How many pages high the sheet should print on to. Active when fitToPage is true
paperSize		What paper size to use (see below)
showRowColHeaders	false	Whether to show the row numbers and column letters
showGridLines	false	Whether to show grid lines
firstPageNumber		Which number to use for the first page
horizontalCentered	false	Whether to center the sheet data horizontally
verticalCentered	false	Whether to center the sheet data vertically

Example Paper Sizes

Name	Value
Letter	undefined
Legal	5
Executive	7
A4	9
A5	11
B5 (JIS)	13
Envelope #10	20
Envelope DL	27
Envelope C5	28
Envelope B5	34
Envelope Monarch	37
Double Japan Postcard Rotated	82
16K 197x273 mm	119

Headers and Footers

Here's how to add headers and footers. The added content is mainly text, such as time, introduction, file information, etc., and you can set the style of the text. In addition, you can set different texts for the first page and even page.

Note: Images are not currently supported.

// Set footer (default centered), result: "Page 2 of 16"
worksheet.headerFooter.oddFooter = "Page &P of &N";

// Set the footer (default centered) to bold, resulting in: "Page 2 of 16"
worksheet.headerFooter.oddFooter = "Page &P of &N";

// Set the left footer to 18px and italicize. Result: "Page 2 of 16"
worksheet.headerFooter.oddFooter = "&LPage &P of &N";

// Set the middle header to gray Aril, the result: "52 exceljs"
worksheet.headerFooter.oddHeader = "&C&KCCCCCC&\"Aril\"52 exceljs";

// Set the left, center, and right text of the footer. Result: “Exceljs” in the footer left. “demo.xlsx” in the footer center. “Page 2” in the footer right
worksheet.headerFooter.oddFooter = "&Lexceljs&C&F&RPage &P";

// Add different header & footer for the first page
worksheet.headerFooter.differentFirst = true;
worksheet.headerFooter.firstHeader = "Hello Exceljs";
worksheet.headerFooter.firstFooter = "Hello World"

Supported headerFooter settings

Name	Default	Description
differentFirst	false	Set the value of differentFirst as true, which indicates that headers/footers for first page are different from the other pages
differentOddEven	false	Set the value of differentOddEven as true, which indicates that headers/footers for odd and even pages are different
oddHeader	null	Set header string for odd(default) pages, could format the string
oddFooter	null	Set footer string for odd(default) pages, could format the string
evenHeader	null	Set header string for even pages, could format the string
evenFooter	null	Set footer string for even pages, could format the string
firstHeader	null	Set header string for the first page, could format the string
firstFooter	null	Set footer string for the first page, could format the string

Script Commands

Commands	Description
&L	Set position to the left
&C	Set position to the center
&R	Set position to the right
&P	The current page number
&N	The total number of pages
&D	The current date
&T	The current time
&G	A picture
&A	The worksheet name
&F	The file name
&B	Make text bold
&I	Italicize text
&U	Underline text
&"font name"	font name, for example &"Aril"
&font size	font size, for example 12
&KHEXCode	font color, for example &KCCCCCC

Worksheet Views

Worksheets now support a list of views, that control how Excel presents the sheet:

frozen - where a number of rows and columns to the top and left are frozen in place. Only the bottom left section will scroll
split - where the view is split into 4 sections, each semi-independently scrollable.

Each view also supports various properties:

Name	Default	Description
state	'normal'	Controls the view state - one of normal, frozen or split
rightToLeft	false	Sets the worksheet view's orientation to right-to-left
activeCell	undefined	The currently selected cell
showRuler	true	Shows or hides the ruler in Page Layout
showRowColHeaders	true	Shows or hides the row and column headers (e.g. A1, B1 at the top and 1,2,3 on the left
showGridLines	true	Shows or hides the gridlines (shown for cells where borders have not been defined)
zoomScale	100	Percentage zoom to use for the view
zoomScaleNormal	100	Normal zoom for the view
style	undefined	Presentation style - one of pageBreakPreview or pageLayout. Note pageLayout is not compatable with frozen views

Frozen Views

Frozen views support the following extra properties:

Name	Default	Description
xSplit	0	How many columns to freeze. To freeze rows only, set this to 0 or undefined
ySplit	0	How many rows to freeze. To freeze columns only, set this to 0 or undefined
topLeftCell	special	Which cell will be top-left in the bottom-right pane. Note: cannot be a frozen cell. Defaults to first unfrozen cell

worksheet.views = [
  {state: 'frozen', xSplit: 2, ySplit: 3, topLeftCell: 'G10', activeCell: 'A1'}
];

Split Views

Split views support the following extra properties:

Name	Default	Description
xSplit	0	How many points from the left to place the splitter. To split vertically, set this to 0 or undefined
ySplit	0	How many points from the top to place the splitter. To split horizontally, set this to 0 or undefined
topLeftCell	undefined	Which cell will be top-left in the bottom-right pane.
activePane	undefined	Which pane will be active - one of topLeft, topRight, bottomLeft and bottomRight

worksheet.views = [
  {state: 'split', xSplit: 2000, ySplit: 3000, topLeftCell: 'G10', activeCell: 'A1'}
];

Auto filters

It is possible to apply an auto filter to your worksheet.

worksheet.autoFilter = 'A1:C1';

While the range string is the standard form of the autoFilter, the worksheet will also support the following values:

// Set an auto filter from A1 to C1
worksheet.autoFilter = {
  from: 'A1',
  to: 'C1',
}

// Set an auto filter from the cell in row 3 and column 1
// to the cell in row 5 and column 12
worksheet.autoFilter = {
  from: {
    row: 3,
    column: 1
  },
  to: {
    row: 5,
    column: 12
  }
}

// Set an auto filter from D3 to the
// cell in row 7 and column 5
worksheet.autoFilter = {
  from: 'D3',
  to: {
    row: 7,
    column: 5
  }
}

Columns

// Add column headers and define column keys and widths
// Note: these column structures are a workbook-building convenience only,
// apart from the column width, they will not be fully persisted.
worksheet.columns = [
  { header: 'Id', key: 'id', width: 10 },
  { header: 'Name', key: 'name', width: 32 },
  { header: 'D.O.B.', key: 'DOB', width: 10, outlineLevel: 1 }
];

// Access an individual columns by key, letter and 1-based column number
var idCol = worksheet.getColumn('id');
var nameCol = worksheet.getColumn('B');
var dobCol = worksheet.getColumn(3);

// set column properties

// Note: will overwrite cell value C1
dobCol.header = 'Date of Birth';

// Note: this will overwrite cell values C1:C2
dobCol.header = ['Date of Birth', 'A.K.A. D.O.B.'];

// from this point on, this column will be indexed by 'dob' and not 'DOB'
dobCol.key = 'dob';

dobCol.width = 15;

// Hide the column if you'd like
dobCol.hidden = true;

// set an outline level for columns
worksheet.getColumn(4).outlineLevel = 0;
worksheet.getColumn(5).outlineLevel = 1;

// columns support a readonly field to indicate the collapsed state based on outlineLevel
expect(worksheet.getColumn(4).collapsed).to.equal(false);
expect(worksheet.getColumn(5).collapsed).to.equal(true);

// iterate over all current cells in this column
dobCol.eachCell(function(cell, rowNumber) {
  // ...
});

// iterate over all current cells in this column including empty cells
dobCol.eachCell({ includeEmpty: true }, function(cell, rowNumber) {
  // ...
});

// add a column of new values
worksheet.getColumn(6).values = [1,2,3,4,5];

// add a sparse column of values
worksheet.getColumn(7).values = [,,2,3,,5,,7,,,,11];

// cut one or more columns (columns to the right are shifted left)
// If column properties have been definde, they will be cut or moved accordingly
// Known Issue: If a splice causes any merged cells to move, the results may be unpredictable
worksheet.spliceColumns(3,2);

// remove one column and insert two more.
// Note: columns 4 and above will be shifted right by 1 column.
// Also: If the worksheet has more rows than values in the colulmn inserts,
//  the rows will still be shifted as if the values existed
var newCol3Values = [1,2,3,4,5];
var newCol4Values = ['one', 'two', 'three', 'four', 'five'];
worksheet.spliceColumns(3, 1, newCol3Values, newCol4Values);

Rows

// Add a couple of Rows by key-value, after the last current row, using the column keys
worksheet.addRow({id: 1, name: 'John Doe', dob: new Date(1970,1,1)});
worksheet.addRow({id: 2, name: 'Jane Doe', dob: new Date(1965,1,7)});

// Add a row by contiguous Array (assign to columns A, B & C)
worksheet.addRow([3, 'Sam', new Date()]);

// Add a row by sparse Array (assign to columns A, E & I)
var rowValues = [];
rowValues[1] = 4;
rowValues[5] = 'Kyle';
rowValues[9] = new Date();
worksheet.addRow(rowValues);

// Add an array of rows
var rows = [
  [5,'Bob',new Date()], // row by array
  {id:6, name: 'Barbara', dob: new Date()}
];
worksheet.addRows(rows);

// Get a row object. If it doesn't already exist, a new empty one will be returned
var row = worksheet.getRow(5);

// Get the last editable row in a worksheet (or undefined if there are none)
var row = worksheet.lastRow;

// Set a specific row height
row.height = 42.5;

// make row hidden
row.hidden = true;

// set an outline level for rows
worksheet.getRow(4).outlineLevel = 0;
worksheet.getRow(5).outlineLevel = 1;

// rows support a readonly field to indicate the collapsed state based on outlineLevel
expect(worksheet.getRow(4).collapsed).to.equal(false);
expect(worksheet.getRow(5).collapsed).to.equal(true);


row.getCell(1).value = 5; // A5's value set to 5
row.getCell('name').value = 'Zeb'; // B5's value set to 'Zeb' - assuming column 2 is still keyed by name
row.getCell('C').value = new Date(); // C5's value set to now

// Get a row as a sparse array
// Note: interface change: worksheet.getRow(4) ==> worksheet.getRow(4).values
row = worksheet.getRow(4).values;
expect(row[5]).toEqual('Kyle');

// assign row values by contiguous array (where array element 0 has a value)
row.values = [1,2,3];
expect(row.getCell(1).value).toEqual(1);
expect(row.getCell(2).value).toEqual(2);
expect(row.getCell(3).value).toEqual(3);

// assign row values by sparse array  (where array element 0 is undefined)
var values = []
values[5] = 7;
values[10] = 'Hello, World!';
row.values = values;
expect(row.getCell(1).value).toBeNull();
expect(row.getCell(5).value).toEqual(7);
expect(row.getCell(10).value).toEqual('Hello, World!');

// assign row values by object, using column keys
row.values = {
  id: 13,
  name: 'Thing 1',
  dob: new Date()
};

// Insert a page break below the row
row.addPageBreak();

// Iterate over all rows that have values in a worksheet
worksheet.eachRow(function(row, rowNumber) {
  console.log('Row ' + rowNumber + ' = ' + JSON.stringify(row.values));
});

// Iterate over all rows (including empty rows) in a worksheet
worksheet.eachRow({ includeEmpty: true }, function(row, rowNumber) {
  console.log('Row ' + rowNumber + ' = ' + JSON.stringify(row.values));
});

// Iterate over all non-null cells in a row
row.eachCell(function(cell, colNumber) {
  console.log('Cell ' + colNumber + ' = ' + cell.value);
});

// Iterate over all cells in a row (including empty cells)
row.eachCell({ includeEmpty: true }, function(cell, colNumber) {
  console.log('Cell ' + colNumber + ' = ' + cell.value);
});

// Cut one or more rows (rows below are shifted up)
// Known Issue: If a splice causes any merged cells to move, the results may be unpredictable
worksheet.spliceRows(4,3);

// remove one row and insert two more.
// Note: rows 4 and below will be shifted down by 1 row.
var newRow3Values = [1,2,3,4,5];
var newRow4Values = ['one', 'two', 'three', 'four', 'five'];
worksheet.spliceRows(3, 1, newRow3Values, newRow4Values);

// Cut one or more cells (cells to the right are shifted left)
// Note: this operation will not affect other rows
row.splice(3,2);

// remove one cell and insert two more (cells to the right of the cut cell will be shifted right)
row.splice(4,1,'new value 1', 'new value 2');

// Commit a completed row to stream
row.commit();

// row metrics
var rowSize = row.cellCount;
var numValues = row.actualCellCount;

Handling Individual Cells

var cell = worksheet.getCell('C3');

// Modify/Add individual cell
cell.value = new Date(1968, 5, 1);

// query a cell's type
expect(cell.type).toEqual(Excel.ValueType.Date);

// use string value of cell
myInput.value = cell.text;

// use html-safe string for rendering...
var html = '<div>' + cell.html + '</div>';

Merged Cells

// merge a range of cells
worksheet.mergeCells('A4:B5');

// ... merged cells are linked
worksheet.getCell('B5').value = 'Hello, World!';
expect(worksheet.getCell('B5').value).toBe(worksheet.getCell('A4').value);
expect(worksheet.getCell('B5').master).toBe(worksheet.getCell('A4'));

// ... merged cells share the same style object
expect(worksheet.getCell('B5').style).toBe(worksheet.getCell('A4').style);
worksheet.getCell('B5').style.font = myFonts.arial;
expect(worksheet.getCell('A4').style.font).toBe(myFonts.arial);

// unmerging the cells breaks the style links
worksheet.unMergeCells('A4');
expect(worksheet.getCell('B5').style).not.toBe(worksheet.getCell('A4').style);
expect(worksheet.getCell('B5').style.font).not.toBe(myFonts.arial);

// merge by top-left, bottom-right
worksheet.mergeCells('G10', 'H11');
worksheet.mergeCells(10,11,12,13); // top,left,bottom,right

Defined Names

Individual cells (or multiple groups of cells) can have names assigned to them. The names can be used in formulas and data validation (and probably more).

// assign (or get) a name for a cell (will overwrite any other names that cell had)
worksheet.getCell('A1').name = 'PI';
expect(worksheet.getCell('A1').name).to.equal('PI');

// assign (or get) an array of names for a cell (cells can have more than one name)
worksheet.getCell('A1').names = ['thing1', 'thing2'];
expect(worksheet.getCell('A1').names).to.have.members(['thing1', 'thing2']);

// remove a name from a cell
worksheet.getCell('A1').removeName('thing1');
expect(worksheet.getCell('A1').names).to.have.members(['thing2']);

Data Validations

Cells can define what values are valid or not and provide prompting to the user to help guide them.

Validation types can be one of the following:

Type	Description
list	Define a discrete set of valid values. Excel will offer these in a dropdown for easy entry
whole	The value must be a whole number
decimal	The value must be a decimal number
textLength	The value may be text but the length is controlled
custom	A custom formula controls the valid values

For types other than list or custom, the following operators affect the validation:

Operator	Description
between	Values must lie between formula results
notBetween	Values must not lie between formula results
equal	Value must equal formula result
notEqual	Value must not equal formula result
greaterThan	Value must be greater than formula result
lessThan	Value must be less than formula result
greaterThanOrEqual	Value must be greater than or equal to formula result
lessThanOrEqual	Value must be less than or equal to formula result

// Specify list of valid values (One, Two, Three, Four).
// Excel will provide a dropdown with these values.
worksheet.getCell('A1').dataValidation = {
  type: 'list',
  allowBlank: true,
  formulae: ['"One,Two,Three,Four"']
};

// Specify list of valid values from a range.
// Excel will provide a dropdown with these values.
worksheet.getCell('A1').dataValidation = {
  type: 'list',
  allowBlank: true,
  formulae: ['$D$5:$F$5']
};

// Specify Cell must be a whole number that is not 5.
// Show the user an appropriate error message if they get it wrong
worksheet.getCell('A1').dataValidation = {
  type: 'whole',
  operator: 'notEqual',
  showErrorMessage: true,
  formulae: [5],
  errorStyle: 'error',
  errorTitle: 'Five',
  error: 'The value must not be Five'
};

// Specify Cell must be a decomal number between 1.5 and 7.
// Add 'tooltip' to help guid the user
worksheet.getCell('A1').dataValidation = {
  type: 'decimal',
  operator: 'between',
  allowBlank: true,
  showInputMessage: true,
  formulae: [1.5, 7],
  promptTitle: 'Decimal',
  prompt: 'The value must between 1.5 and 7'
};

// Specify Cell must be have a text length less than 15
worksheet.getCell('A1').dataValidation = {
  type: 'textLength',
  operator: 'lessThan',
  showErrorMessage: true,
  allowBlank: true,
  formulae: [15]
};

// Specify Cell must be have be a date before 1st Jan 2016
worksheet.getCell('A1').dataValidation = {
  type: 'date',
  operator: 'lessThan',
  showErrorMessage: true,
  allowBlank: true,
  formulae: [new Date(2016,0,1)]
};

Cell Comments

Add old style comment to a cell

// plain text note
worksheet.getCell('A1').note = 'Hello, ExcelJS!';

// colourful formatted note
ws.getCell('B1').note = {
  texts: [
    {'font': {'size': 12, 'color': {'theme': 0}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': 'This is '},
    {'font': {'italic': true, 'size': 12, 'color': {'theme': 0}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'a'},
    {'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' '},
    {'font': {'size': 12, 'color': {'argb': 'FFFF6600'}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'colorful'},
    {'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' text '},
    {'font': {'size': 12, 'color': {'argb': 'FFCCFFCC'}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'with'},
    {'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' in-cell '},
    {'font': {'bold': true, 'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': 'format'},
  ],
};

Styles

Cells, Rows and Columns each support a rich set of styles and formats that affect how the cells are displayed.

Styles are set by assigning the following properties:

// assign a style to a cell
ws.getCell('A1').numFmt = '0.00%';

// Apply styles to worksheet columns
ws.columns = [
  { header: 'Id', key: 'id', width: 10 },
  { header: 'Name', key: 'name', width: 32, style: { font: { name: 'Arial Black' } } },
  { header: 'D.O.B.', key: 'DOB', width: 10, style: { numFmt: 'dd/mm/yyyy' } }
];

// Set Column 3 to Currency Format
ws.getColumn(3).numFmt = '"£"#,##0.00;[Red]\-"£"#,##0.00';

// Set Row 2 to Comic Sans.
ws.getRow(2).font = { name: 'Comic Sans MS', family: 4, size: 16, underline: 'double', bold: true };

When a style is applied to a row or column, it will be applied to all currently existing cells in that row or column. Also, any new cell that is created will inherit its initial styles from the row and column it belongs to.

If a cell's row and column both define a specific style (e.g. font), the cell will use the row style over the column style. However if the row and column define different styles (e.g. column.numFmt and row.font), the cell will inherit the font from the row and the numFmt from the column.

Caveat: All the above properties (with the exception of numFmt, which is a string), are JS object structures. If the same style object is assigned to more than one spreadsheet entity, then each entity will share the same style object. If the style object is later modified before the spreadsheet is serialized, then all entities referencing that style object will be modified too. This behaviour is intended to prioritize performance by reducing the number of JS objects created. If you want the style objects to be independent, you will need to clone them before assigning them. Also, by default, when a document is read from file (or stream) if spreadsheet entities share similar styles, then they will reference the same style object too.

Number Formats

// display value as '1 3/5'
ws.getCell('A1').value = 1.6;
ws.getCell('A1').numFmt = '# ?/?';

// display value as '1.60%'
ws.getCell('B1').value = 0.016;
ws.getCell('B1').numFmt = '0.00%';

Fonts


// for the wannabe graphic designers out there
ws.getCell('A1').font = {
  name: 'Comic Sans MS',
  family: 4,
  size: 16,
  underline: true,
  bold: true
};

// for the graduate graphic designers...
ws.getCell('A2').font = {
  name: 'Arial Black',
  color: { argb: 'FF00FF00' },
  family: 2,
  size: 14,
  italic: true
};

// for the vertical align
ws.getCell('A3').font = {
  vertAlign: 'superscript'
};

// note: the cell will store a reference to the font object assigned.
// If the font object is changed afterwards, the cell font will change also...
var font = { name: 'Arial', size: 12 };
ws.getCell('A3').font = font;
font.size = 20; // Cell A3 now has font size 20!

// Cells that share similar fonts may reference the same font object after
// the workbook is read from file or stream

Font Property	Description	Example Value(s)
name	Font name.	'Arial', 'Calibri', etc.
family	Font family for fallback. An integer value.	1 - Serif, 2 - Sans Serif, 3 - Mono, Others - unknown
scheme	Font scheme.	'minor', 'major', 'none'
charset	Font charset. An integer value.	1, 2, etc.
size	Font size. An integer value.	9, 10, 12, 16, etc.
color	Colour description, an object containing an ARGB value.	{ argb: 'FFFF0000'}
bold	Font weight	true, false
italic	Font slope	true, false
underline	Font underline style	true, false, 'none', 'single', 'double', 'singleAccounting', 'doubleAccounting'
strike	Font ~~strikethrough~~	true, false
outline	Font outline	true, false
vertAlign	Vertical align	'superscript', 'subscript'

Alignment

// set cell alignment to top-left, middle-center, bottom-right
ws.getCell('A1').alignment = { vertical: 'top', horizontal: 'left' };
ws.getCell('B1').alignment = { vertical: 'middle', horizontal: 'center' };
ws.getCell('C1').alignment = { vertical: 'bottom', horizontal: 'right' };

// set cell to wrap-text
ws.getCell('D1').alignment = { wrapText: true };

// set cell indent to 1
ws.getCell('E1').alignment = { indent: 1 };

// set cell text rotation to 30deg upwards, 45deg downwards and vertical text
ws.getCell('F1').alignment = { textRotation: 30 };
ws.getCell('G1').alignment = { textRotation: -45 };
ws.getCell('H1').alignment = { textRotation: 'vertical' };

Valid Alignment Property Values

horizontal	vertical	wrapText	indent	readingOrder	textRotation
left	top	true	integer	rtl	0 to 90
center	middle	false		ltr	-1 to -90
right	bottom				vertical
fill	distributed
justify	justify
centerContinuous
distributed

Borders

// set single thin border around A1
ws.getCell('A1').border = {
  top: {style:'thin'},
  left: {style:'thin'},
  bottom: {style:'thin'},
  right: {style:'thin'}
};

// set double thin green border around A3
ws.getCell('A3').border = {
  top: {style:'double', color: {argb:'FF00FF00'}},
  left: {style:'double', color: {argb:'FF00FF00'}},
  bottom: {style:'double', color: {argb:'FF00FF00'}},
  right: {style:'double', color: {argb:'FF00FF00'}}
};

// set thick red cross in A5
ws.getCell('A5').border = {
  diagonal: {up: true, down: true, style:'thick', color: {argb:'FFFF0000'}}
};

Valid Border Styles

thin
dotted
dashDot
hair
dashDotDot
slantDashDot
mediumDashed
mediumDashDotDot
mediumDashDot
medium
double
thick

Fills

// fill A1 with red darkVertical stripes
ws.getCell('A1').fill = {
  type: 'pattern',
  pattern:'darkVertical',
  fgColor:{argb:'FFFF0000'}
};

// fill A2 with yellow dark trellis and blue behind
ws.getCell('A2').fill = {
  type: 'pattern',
  pattern:'darkTrellis',
  fgColor:{argb:'FFFFFF00'},
  bgColor:{argb:'FF0000FF'}
};

// fill A3 with blue-white-blue gradient from left to right
ws.getCell('A3').fill = {
  type: 'gradient',
  gradient: 'angle',
  degree: 0,
  stops: [
    {position:0, color:{argb:'FF0000FF'}},
    {position:0.5, color:{argb:'FFFFFFFF'}},
    {position:1, color:{argb:'FF0000FF'}}
  ]
};


// fill A4 with red-green gradient from center
ws.getCell('A2').fill = {
  type: 'gradient',
  gradient: 'path',
  center:{left:0.5,top:0.5},
  stops: [
    {position:0, color:{argb:'FFFF0000'}},
    {position:1, color:{argb:'FF00FF00'}}
  ]
};

Pattern Fills

Property	Required	Description
type	Y	Value: 'pattern' Specifies this fill uses patterns
pattern	Y	Specifies type of pattern (see Valid Pattern Types below)
fgColor	N	Specifies the pattern foreground color. Default is black.
bgColor	N	Specifies the pattern background color. Default is white.

Valid Pattern Types

none
solid
darkGray
mediumGray
lightGray
gray125
gray0625
darkHorizontal
darkVertical
darkDown
darkUp
darkGrid
darkTrellis
lightHorizontal
lightVertical
lightDown
lightUp
lightGrid
lightTrellis

Gradient Fills

Property	Required	Description
type	Y	Value: 'gradient' Specifies this fill uses gradients
gradient	Y	Specifies gradient type. One of ['angle', 'path']
degree	angle	For 'angle' gradient, specifies the direction of the gradient. 0 is from the left to the right. Values from 1 - 359 rotates the direction clockwise
center	path	For 'path' gradient. Specifies the relative coordinates for the start of the path. 'left' and 'top' values range from 0 to 1
stops	Y	Specifies the gradient colour sequence. Is an array of objects containing position and color starting with position 0 and ending with position 1. Intermediary positions may be used to specify other colours on the path.

Caveats

Using the interface above it may be possible to create gradient fill effects not possible using the XLSX editor program. For example, Excel only supports angle gradients of 0, 45, 90 and 135. Similarly the sequence of stops may also be limited by the UI with positions [0,1] or [0,0.5,1] as the only options. Take care with this fill to be sure it is supported by the target XLSX viewers.

Rich Text

Individual cells now support rich text or in-cell formatting. Rich text values can control the font properties of any number of sub-strings within the text value. See Fonts for a complete list of details on what font properties are supported.


ws.getCell('A1').value = {
  'richText': [
    {'font': {'size': 12,'color': {'theme': 0},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': 'This is '},
    {'font': {'italic': true,'size': 12,'color': {'theme': 0},'name': 'Calibri','scheme': 'minor'},'text': 'a'},
    {'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' '},
    {'font': {'size': 12,'color': {'argb': 'FFFF6600'},'name': 'Calibri','scheme': 'minor'},'text': 'colorful'},
    {'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' text '},
    {'font': {'size': 12,'color': {'argb': 'FFCCFFCC'},'name': 'Calibri','scheme': 'minor'},'text': 'with'},
    {'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' in-cell '},
    {'font': {'bold': true,'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': 'format'}
  ]
};

expect(ws.getCell('A1').text).to.equal('This is a colorful text with in-cell format');
expect(ws.getCell('A1').type).to.equal(Excel.ValueType.RichText);

Outline Levels

Excel supports outlining; where rows or columns can be expanded or collapsed depending on what level of detail the user wishes to view.

Outline levels can be defined in column setup:

worksheet.columns = [
  { header: 'Id', key: 'id', width: 10 },
  { header: 'Name', key: 'name', width: 32 },
  { header: 'D.O.B.', key: 'DOB', width: 10, outlineLevel: 1 }
];

Or directly on the row or column

worksheet.getColumn(3).outlineLevel = 1;
worksheet.getRow(3).outlineLevel = 1;

The sheet outline levels can be set on the worksheet

// set column outline level
worksheet.properties.outlineLevelCol = 1;

// set row outline level
worksheet.properties.outlineLevelRow = 1;

Note: adjusting outline levels on rows or columns or the outline levels on the worksheet will incur a side effect of also modifying the collapsed property of all rows or columns affected by the property change. E.g.:

worksheet.properties.outlineLevelCol = 1;

worksheet.getColumn(3).outlineLevel = 1;
expect(worksheet.getColumn(3).collapsed).to.be.true;

worksheet.properties.outlineLevelCol = 2;
expect(worksheet.getColumn(3).collapsed).to.be.false;

The outline properties can be set on the worksheet

worksheet.properties.outlineProperties = {
  summaryBelow: false,
  summaryRight: false,
};

Images

Adding images to a worksheet is a two-step process. First, the image is added to the workbook via the addImage() function which will also return an imageId value. Then, using the imageId, the image can be added to the worksheet either as a tiled background or covering a cell range.

Note: As of this version, adjusting or transforming the image is not supported.

Add Image to Workbook

The Workbook.addImage function supports adding images by filename or by Buffer. Note that in both cases, the extension must be specified. Valid extension values include 'jpeg', 'png', 'gif'.

// add image to workbook by filename
var imageId1 = workbook.addImage({
  filename: 'path/to/image.jpg',
  extension: 'jpeg',
});

// add image to workbook by buffer
var imageId2 = workbook.addImage({
  buffer: fs.readFileSync('path/to.image.png'),
  extension: 'png',
});

// add image to workbook by base64
var myBase64Image = "data:image/png;base64,iVBORw0KG...";
var imageId2 = workbook.addImage({
  base64: myBase64Image,
  extension: 'png',
});

Add image background to worksheet

Using the image id from Workbook.addImage, the background to a worksheet can be set using the addBackgroundImage function

// set background
worksheet.addBackgroundImage(imageId1);

Add image over a range

Using the image id from Workbook.addImage, an image can be embedded within the worksheet to cover a range. The coordinates calculated from the range will cover from the top-left of the first cell to the bottom right of the second.

// insert an image over B2:D6
worksheet.addImage(imageId2, 'B2:D6');

Using a structure instead of a range string, it is possible to partially cover cells.

Note that the coordinate system used for this is zero based, so the top-left of A1 will be { col: 0, row: 0 }. Fractions of cells can be specified by using floating point numbers, e.g. the midpoint of A1 is { col: 0.5, row: 0.5 }.

// insert an image over part of B2:D6
worksheet.addImage(imageId2, {
  tl: { col: 1.5, row: 1.5 },
  br: { col: 3.5, row: 5.5 }
});

The cell range can also have the eproperty 'editAs' which will control how the image is anchored to the cell(s) It can have one of the following values:

Value	Description
undefined	This is the default. It specifies the image will be moved and sized with cells
oneCell	Image will be moved with cells but not sized
absolute	Image will not be moved or sized with cells

ws.addImage(imageId, {
  tl: { col: 0.1125, row: 0.4 },
  br: { col: 2.101046875, row: 3.4 },
  editAs: 'oneCell'
});

Add image to a cell

You can add an image to a cell and then define its width and height in pixels at 96dpi.

worksheet.addImage(imageId2, {
  tl: { col: 0, row: 0 },
  ext: { width: 500, height: 200 }
});

File I/O

XLSX

Reading XLSX

// read from a file
var workbook = new Excel.Workbook();
workbook.xlsx.readFile(filename)
  .then(function() {
    // use workbook
  });

// pipe from stream
var workbook = new Excel.Workbook();
stream.pipe(workbook.xlsx.createInputStream());

// load from buffer
var workbook = new Excel.Workbook();
workbook.xlsx.load(data)
  .then(function() {
    // use workbook
  });

Writing XLSX

// write to a file
var workbook = createAndFillWorkbook();
workbook.xlsx.writeFile(filename)
  .then(function() {
    // done
  });

// write to a stream
workbook.xlsx.write(stream)
  .then(function() {
    // done
  });

// write to a new buffer
workbook.xlsx.writeBuffer()
  .then(function(buffer) {
    // done
  });

CSV

Reading CSV

// read from a file
var workbook = new Excel.Workbook();
workbook.csv.readFile(filename)
  .then(worksheet => {
    // use workbook or worksheet
  });

// read from a stream
var workbook = new Excel.Workbook();
workbook.csv.read(stream)
  .then(worksheet => {
    // use workbook or worksheet
  });

// pipe from stream
var workbook = new Excel.Workbook();
stream.pipe(workbook.csv.createInputStream());

// read from a file with European Dates
var workbook = new Excel.Workbook();
var options = {
  dateFormats: ['DD/MM/YYYY']
};
workbook.csv.readFile(filename, options)
  .then(worksheet => {
    // use workbook or worksheet
  });

// read from a file with custom value parsing
var workbook = new Excel.Workbook();
var options = {
  map(value, index) {
    switch(index) {
      case 0:
        // column 1 is string
        return value;
      case 1:
        // column 2 is a date
        return new Date(value);
      case 2:
        // column 3 is JSON of a formula value
        return JSON.parse(value);
      default:
        // the rest are numbers
        return parseFloat(value);
    }
  }
};
workbook.csv.readFile(filename, options)
  .then(function(worksheet) {
    // use workbook or worksheet
  });

The CSV parser uses fast-csv to read the CSV file. The options passed into the read functions above is also passed to fast-csv for parsing of the csv data. Please refer to the fast-csv README.md for details.

Dates are parsed using the npm module dayjs. If no dateFormats are supplied, the following are used:

dayjs.ISO_8601
'MM-DD-YYYY'
'YYYY-MM-DD'

Writing CSV


// write to a file
var workbook = createAndFillWorkbook();
workbook.csv.writeFile(filename)
  .then(() => {
    // done
  });

// write to a stream
// Be careful that you need to provide sheetName or
// sheetId for correct import to csv.
workbook.csv.write(stream, { sheetName: 'Page name' })
  .then(() => {
    // done
  });

// write to a file with European Date-Times
var workbook = new Excel.Workbook();
var options = {
  dateFormat: 'DD/MM/YYYY HH:mm:ss',
  dateUTC: true, // use utc when rendering dates
};
workbook.csv.writeFile(filename, options)
  .then(() => {
    // done
  });


// write to a file with custom value formatting
var workbook = new Excel.Workbook();
var options = {
  map(value, index) {
    switch(index) {
      case 0:
        // column 1 is string
        return value;
      case 1:
        // column 2 is a date
        return dayjs(value).format('YYYY-MM-DD');
      case 2:
        // column 3 is a formula, write just the result
        return value.result;
      default:
        // the rest are numbers
        return value;
    }
  }
};
workbook.csv.writeFile(filename, options)
  .then(() => {
    // done
  });

// write to a new buffer
workbook.csv.writeBuffer()
  .then(function(buffer) {
    // done
  });

The CSV parser uses fast-csv to write the CSV file. The options passed into the write functions above is also passed to fast-csv for writing the csv data. Please refer to the fast-csv README.md for details.

Dates are formatted using the npm module dayjs. If no dateFormat is supplied, moment.ISO_8601 is used. When writing a CSV you can supply the boolean dateUTC as true to have ExcelJS parse the date without automatically converting the timezone using moment.utc().

Streaming I/O

The File I/O documented above requires that an entire workbook is built up in memory before the file can be written. While convenient, it can limit the size of the document due to the amount of memory required.

A streaming writer (or reader) processes the workbook or worksheet data as it is generated, converting it into file form as it goes. Typically this is much more efficient on memory as the final memory footprint and even intermediate memory footprints are much more compact than with the document version, especially when you consider that the row and cell objects are disposed once they are committed.

The interface to the streaming workbook and worksheet is almost the same as the document versions with a few minor practical differences:

Once a worksheet is added to a workbook, it cannot be removed.
Once a row is committed, it is no longer accessible since it will have been dropped from the worksheet.
unMergeCells() is not supported.

Note that it is possible to build the entire workbook without committing any rows. When the workbook is committed, all added worksheets (including all uncommitted rows) will be automatically committed. However in this case, little will have been gained over the Document version.

Streaming XLSX

Streaming XLSX Writer

The streaming XLSX writer is available in the ExcelJS.stream.xlsx namespace.

The constructor takes an optional options object with the following fields:

Field	Description
stream	Specifies a writable stream to write the XLSX workbook to.
filename	If stream not specified, this field specifies the path to a file to write the XLSX workbook to.
useSharedStrings	Specifies whether to use shared strings in the workbook. Default is false
useStyles	Specifies whether to add style information to the workbook. Styles can add some performance overhead. Default is false

If neither stream nor filename is specified in the options, the workbook writer will create a StreamBuf object that will store the contents of the XLSX workbook in memory. This StreamBuf object, which can be accessed via the property workbook.stream, can be used to either access the bytes directly by stream.read() or to pipe the contents to another stream.

// construct a streaming XLSX workbook writer with styles and shared strings
var options = {
  filename: './streamed-workbook.xlsx',
  useStyles: true,
  useSharedStrings: true
};
var workbook = new Excel.stream.xlsx.WorkbookWriter(options);

In general, the interface to the streaming XLSX writer is the same as the Document workbook (and worksheets) described above, in fact the row, cell and style objects are the same.

However there are some differences...

Construction

As seen above, the WorkbookWriter will typically require the output stream or file to be specified in the constructor.

Committing Data

When a worksheet row is ready, it should be committed so that the row object and contents can be freed. Typically this would be done as each row is added...

worksheet.addRow({
   id: i,
   name: theName,
   etc: someOtherDetail
}).commit();

The reason the WorksheetWriter does not commit rows as they are added is to allow cells to be merged across rows:

worksheet.mergeCells('A1:B2');
worksheet.getCell('A1').value = 'I am merged';
worksheet.getCell('C1').value = 'I am not';
worksheet.getCell('C2').value = 'Neither am I';
worksheet.getRow(2).commit(); // now rows 1 and two are committed.

As each worksheet is completed, it must also be committed:

// Finished adding data. Commit the worksheet
worksheet.commit();

To complete the XLSX document, the workbook must be committed. If any worksheet in a workbook are uncommitted, they will be committed automatically as part of the workbook commit.

// Finished the workbook.
workbook.commit()
  .then(function() {
    // the stream has been written
  });

Browser

A portion of this library has been isolated and tested for use within a browser environment.

Due to the streaming nature of the workbook reader and workbook writer, these have not been included. Only the document based workbook may be used (see Create a Workbook for details).

For example code using ExcelJS in the browser take a look at the spec/browser folder in the github repo.

Prebundled

The following files are pre-bundled and included inside the dist folder.

exceljs.js
exceljs.min.js

Value Types

The following value types are supported.

Null Value

Enum: Excel.ValueType.Null

A null value indicates an absence of value and will typically not be stored when written to file (except for merged cells). It can be used to remove the value from a cell.

E.g.

worksheet.getCell('A1').value = null;

Merge Cell

Enum: Excel.ValueType.Merge

A merge cell is one that has its value bound to another 'master' cell. Assigning to a merge cell will cause the master's cell to be modified.

Number Value

Enum: Excel.ValueType.Number

A numeric value.

E.g.

worksheet.getCell('A1').value = 5;
worksheet.getCell('A2').value = 3.14159;

String Value

Enum: Excel.ValueType.String

A simple text string.

E.g.

worksheet.getCell('A1').value = 'Hello, World!';

Date Value

Enum: Excel.ValueType.Date

A date value, represented by the JavaScript Date type.

E.g.

worksheet.getCell('A1').value = new Date(2017, 2, 15);

Hyperlink Value

Enum: Excel.ValueType.Hyperlink

A URL with both text and link value.

E.g.

// link to web
worksheet.getCell('A1').value = {
  text: 'www.mylink.com',
  hyperlink: 'http://www.mylink.com',
  tooltip: 'www.mylink.com'
};

// internal link
worksheet.getCell('A1').value = { text: 'Sheet2', hyperlink: '#\\"Sheet2\\"!A1' };

Formula Value

Enum: Excel.ValueType.Formula

An Excel formula for calculating values on the fly. Note that while the cell type will be Formula, the cell may have an effectiveType value that will be derived from the result value.

Note that ExcelJS cannot process the formula to generate a result, it must be supplied.

E.g.

worksheet.getCell('A3').value = { formula: 'A1+A2', result: 7 };

Cells also support convenience getters to access the formula and result:

worksheet.getCell('A3').formula === 'A1+A2';
worksheet.getCell('A3').result === 7;

Shared Formula

Shared formulae enhance the compression of the xlsx document by increasing the repetition of text within the worksheet xml.

A shared formula can be assigned to a cell using a new value form:

worksheet.getCell('B3').value = { sharedFormula: 'A3', result: 10 };

This specifies that the cell B3 is a formula that will be derived from the formula in A3 and its result is 10.

The formula convenience getter will translate the formula in A3 to what it should be in B3:

worksheet.getCell('B3').formula === 'B1+B2';

Formula Type

To distinguish between real and translated formula cells, use the formulaType getter:

worksheet.getCell('A3').formulaType === Enums.FormulaType.Master;
worksheet.getCell('B3').formulaType === Enums.FormulaType.Shared;

Formula type has the following values:

Name	Value
Enums.FormulaType.None	0
Enums.FormulaType.Master	1
Enums.FormulaType.Shared	2

Rich Text Value

Enum: Excel.ValueType.RichText

Rich, styled text.

E.g.

worksheet.getCell('A1').value = {
  richText: [
    { text: 'This is '},
    {font: {italic: true}, text: 'italic'},
  ]
};

Boolean Value

Enum: Excel.ValueType.Boolean

E.g.

worksheet.getCell('A1').value = true;
worksheet.getCell('A2').value = false;

Error Value

Enum: Excel.ValueType.Error

E.g.

worksheet.getCell('A1').value = { error: '#N/A' };
worksheet.getCell('A2').value = { error: '#VALUE!' };

The current valid Error text values are:

Name	Value
Excel.ErrorValue.NotApplicable	#N/A
Excel.ErrorValue.Ref	#REF!
Excel.ErrorValue.Name	#NAME?
Excel.ErrorValue.DivZero	#DIV/0!
Excel.ErrorValue.Null	#NULL!
Excel.ErrorValue.Value	#VALUE!
Excel.ErrorValue.Num	#NUM!

Interface Changes

Every effort is made to make a good consistent interface that doesn't break through the versions but regrettably, now and then some things have to change for the greater good.

0.1.0

Worksheet.eachRow

The arguments in the callback function to Worksheet.eachRow have been swapped and changed; it was function(rowNumber,rowValues), now it is function(row, rowNumber) which gives it a look and feel more like the underscore (_.each) function and prioritises the row object over the row number.

Worksheet.getRow

This function has changed from returning a sparse array of cell values to returning a Row object. This enables accessing row properties and will facilitate managing row styles and so on.

The sparse array of cell values is still available via Worksheet.getRow(rowNumber).values;

0.1.1

cell.model

cell.styles renamed to cell.style

0.2.44

Promises returned from functions switched from Bluebird to native node Promise which can break calling code if they rely on Bluebird's extra features.

To mitigate this the following two changes were added to 0.3.0:

A more fully featured and still browser compatable promise lib is used by default. This lib supports many of the features of Bluebird but with a much lower footprint.
An option to inject a different Promise implementation. See Config section for more details.

Config

ExcelJS now supports dependency injection for the promise library. You can restore Bluebird promises by including the following code in your module...

ExcelJS.config.setValue('promise', require('bluebird'));

Please note: I have tested ExcelJS with bluebird specifically (since up until recently this was the library it used). From the tests I have done it will not work with Q.

Caveats

Dist Folder

Before publishing this module, the source code is transpiled and otherwise processed before being placed in a dist/ folder. This README identifies two files - a browserified bundle and minified version. No other contents of the dist/ folder are guaranteed in any way other than the file specified as "main" in the package.json

Known Issues

Testing with Puppeteer

The test suite included in this lib includes a small script executed in a headless browser to validate the bundled packages. At the time of this writing, it appears that this test does not play nicely in the Windows Linux subsystem.

For this reason, the browser test can be disabled by the existence of a file named .disable-test-browser

sudo apt-get install libfontconfig

Splice vs Merge

If any splice operation affects a merged cell, the merge group will not be moved correctly

Release History

Version	Changes
0.0.9	Number Formats
0.1.0	Bug Fixes "<" and ">" text characters properly rendered in xlsx Better Column control Better Row control
0.1.1	Bug Fixes More textual data written properly to xml (including text, hyperlinks, formula results and format codes) Better date format code recognition Cell Font Style
0.1.2	Fixed potential race condition on zip write
0.1.3	Cell Alignment Style Row Height Some Internal Restructuring
0.1.5	Bug Fixes Now handles 10 or more worksheets in one workbook theme1.xml file properly added and referenced Cell Borders
0.1.6	Bug Fixes More compatable theme1.xml included in XLSX file Cell Fills
0.1.8	Bug Fixes More compatable theme1.xml included in XLSX file Fixed filename case issue Cell Fills
0.1.9	Bug Fixes Added docProps files to satisfy Mac Excel users Fixed filename case issue Fixed worksheet id issue Core Workbook Properties
0.1.10	Bug Fixes Handles File Not Found error CSV Files
0.1.11	Bug Fixes Fixed Vertical Middle Alignment Issue Row and Column Styles Worksheet.eachRow supports options Row.eachCell supports options New function Column.eachCell
0.2.0	Streaming XLSX Writer At long last ExcelJS can support writing massive XLSX files in a scalable memory efficient manner. Performance has been optimised and even smaller spreadsheets can be faster to write than the document writer. Options have been added to control the use of shared strings and styles as these can both have a considerable effect on performance Worksheet.lastRow Access the last editable row in a worksheet. Row.commit() For streaming writers, this method commits the row (and any previous rows) to the stream. Committed rows will no longer be editable (and are typically deleted from the worksheet object). For Document type workbooks, this method has no effect.
0.2.2	One Billion Cells Achievement Unlocked: A simple test using ExcelJS has created a spreadsheet with 1,000,000,000 cells. Made using random data with 100,000,000 rows of 10 cells per row. I cannot validate the file yet as Excel will not open it and I have yet to implement the streaming reader but I have every confidence that it is good since 1,000,000 rows loads ok.
0.2.3	Bug Fixes Merge Cell Styles Merged cells now persist (and parse) their styles. Streaming XLSX Writer At long last ExcelJS can support writing massive XLSX files in a scalable memory efficient manner. Performance has been optimised and even smaller spreadsheets can be faster to write than the document writer. Options have been added to control the use of shared strings and styles as these can both have a considerable effect on performance Worksheet.lastRow Access the last editable row in a worksheet. Row.commit() For streaming writers, this method commits the row (and any previous rows) to the stream. Committed rows will no longer be editable (and are typically deleted from the worksheet object). For Document type workbooks, this method has no effect.
0.2.4	Bug Fixes Worksheets with Ampersand Names Worksheet names are now xml-encoded and should work with all xml compatable characters Row.hidden & Column.hidden Rows and Columns now support the hidden attribute. Worksheet.addRows New function to add an array of rows (either array or object form) to the end of a worksheet.
0.2.6	Bug Fixes invalid signature: 0x80014: Thanks to hasanlussa for the PR Defined Names Cells can now have assigned names which may then be used in formulas. Converted Bluebird.defer() to new Bluebird(function(resolve, reject){}). Thanks to user Nishchit for the Pull Request
0.2.7	Data Validations Cells can now define validations that controls the valid values the cell can have
0.2.8	Rich Text Value Cells now support *in-cell* formatting - Thanks to Peter ADAM Fixed typo in README - Thanks to MRdNk Fixing emit in worksheet-reader - Thanks to Alan Gunning Clearer Docs - Thanks to miensol
0.2.9	Fixed "read property 'richText' of undefined error. Thanks to james075
0.2.10	Refactoring Complete. All unit and integration tests pass.
0.2.11	Outline Levels. Thanks to cricri for the contribution. Worksheet Properties Further refactoring of worksheet writer.
0.2.12	Sheet Views. Thanks to cricri again for the contribution.
0.2.13	Fix for exceljs might be vulnerable for regular expression denial of service. Kudos to yonjah and Josh Emerson for the resolution. Fix for Multiple Sheets opens in 'Group' mode in Excel. My bad - overzealous sheet view code. Also fix for empty sheet generating invalid xlsx.
0.2.14	Fix for exceljs might be vulnerable for regular expression denial of service. Kudos to yonjah and Josh Emerson for the resolution. Fixed Multiple Sheets opens in 'Group' mode in Excel again. Added Workbook views. Also fix for empty sheet generating invalid xlsx.
0.2.15	Added Page Setup Properties. Thanks to Jackkum for the PR
0.2.16	New Page Setup Property: Print Area
0.2.17	Merged Fix a bug on phonetic characters. This fixes an issue related to reading workbooks with phonetic text in. Note phonetic text is not properly supported yet - just properly ignored. Thanks to zephyrrider and gen6033 for the contribution.
0.2.18	Merged Fix regression #150: Stream API fails to write XLSX files. Apologies for the regression! Thanks to danieleds for the fix. Merged Fix a bug on phonetic characters. This fixes an issue related to reading workbooks with phonetic text in. Note phonetic text is not properly supported yet - just properly ignored. Thanks to zephyrrider and gen6033 for the contribution.
0.2.19	Merged Update xlsx.js #119. This should make parsing more resilient to open-office documents. Thanks to nvitaterna for the contribution.
0.2.20	Merged Changes from exceljs/exceljs#127 applied to latest version #179. Fixes parsing of defined name values. Thanks to agdevbridge and priitliivak for the contribution.
0.2.21	Merged color tabs for worksheet-writer #135. Modified the behaviour to print deprecation warning as tabColor has moved into options.properties. Thanks to ethanlook for the contribution.
0.2.22	Merged Throw legible error when failing Value.getType() #136. Thanks to wulfsolter for the contribution. Honourable mention to contributors whose PRs were fixed before I saw them: haoliangyu wulfsolter
0.2.23	Merged Fall back to JSON.stringify() if unknown Cell.Type #137 with some modification. If a cell value is assigned to an unrecognisable javascript object, the stored value in xlsx and csv files will be JSON stringified. Note that if the file is read again, no attempt will be made to parse the stringified JSON text. Thanks to wulfsolter for the contribution.
0.2.24	Merged Protect cell fix #166. This does not mean full support for protected cells merely that the parser is not confused by the extra xml. Thanks to jayflo for the contribution.
0.2.25	Added functions to delete cells, rows and columns from a worksheet. Modelled after the Array splice method, the functions allow cells, rows and columns to be deleted (and optionally inserted). See Columns and Rows for details. Note: Not compatable with cell merges
0.2.26	Merged Update border-xform.js #184Border edges without style will be parsed and rendered as no-border. Thanks to skumarnk2 for the contribution.
0.2.27	Merged Pass views to worksheet-writer #187. Now also passes views to worksheet-writer. Thanks to Temetz for the contribution. Merged Do not escape xml characters when using shared strings #189. Fixing bug in shared strings. Thanks to tkirda for the contribution.
0.2.28	Merged Fix tiny bug [Update hyperlink-map.js] #190Thanks to lszlkss for the contribution. Merged fix typo on sheet view showGridLines option #196 "showGridlines" should have been "showGridLines". Thanks to gadiaz1 for the contribution.
0.2.29	Merged Fire finish event instead of end event on write stream #199 and Listen for finish event on zip stream instead of middle stream #200. Fixes issues with stream completion events. Thanks to junajan for the contribution.
0.2.30	Merged Fix issue #178 #201. Adds the following properties to workbook: title subject keywords category description company manager Thanks to stavenko for the contribution.
0.2.31	Merged Fix issue #163: the "spans" attribute of the row element is optional #203. Now xlsx parsing will handle documents without row spans. Thanks to arturas-vitkauskas for the contribution.
0.2.32	Merged Fix issue 206 #208. Fixes issue reading xlsx files that have been printed. Also adds "lastPrinted" property to Workbook. Thanks to arturas-vitkauskas for the contribution.
0.2.33	Merged Allow styling of cells with no value. #210. Includes Null type cells with style in the rendering parsing. Thanks to oferns for the contribution.
0.2.34	Merged Fix "Unexpected xml node in parseOpen" bug in LibreOffice documents for attributes dc:language and cp:revision #212. Thanks to jessica-jordan for the contribution.
0.2.35	Fixed Getting a column/row count #74. Worksheet now has rowCount and columnCount properties (and actual variants), Row has cellCount.
0.2.36	Merged Stream reader fixes #217. Thanks to kturney for the contribution.
0.2.37	Merged Fix output order of Sheet Properties #225. Thanks to keeneym for the contribution. Merged remove empty worksheet[0] from _worksheets #231. Thanks to pookong for the contribution. Merged do not skip empty string in shared strings so that indexes match #232. Thanks again to pookong for the contribution. Merged use shared strings for streamed writes #233. Thanks again to pookong for the contribution.
0.2.38	Merged Add a comment for issue #216 #236. Thanks to jsalwen for the contribution. Merged Start on support for 1904 based dates #237. Fixed date handling in documents with the 1904 flag set. Thanks to holm for the contribution.
0.2.39	Merged Stops Bluebird warning about unreturned promise #245. Thanks to robinbullocks4rb for the contribution. Merged Added missing dependency: col-cache.js #247. Thanks to Manish2005 for the contribution.
0.2.42	Browser Compatable! Well mostly. I have added a browser sub-folder that contains a browserified bundle and an index.js that can be used to generate another. See Browser section for details. Fixed corrupted theme.xml. Apologies for letting that through. Merged [BUGFIX] data validation formulae undefined #253. Thanks to jayflo for the contribution.
0.2.43	Merged added a (maybe partial) solution to issue 99. i wasn't able to create an appropriate test #255. This fixes Too few data or empty worksheet generate malformed excel file #99. Thanks to mminuti for the contribution.
0.2.44	Reduced Dependencies. Goodbye lodash, goodbye bluebird. Minified bundle is now just over half what it was in the first version.
0.2.45	Merged Sheets with hyperlinks and data validations are corrupted #256. Thanks to simon-stoic for the contribution.
0.2.46	Merged Exclude character controls from XML output. Fixes #234 #262. Thanks to holm for the contribution. Merged Add support for identifier #259. This fixes Broken XLSX because of "vertical tab" ascii character in a cell #234. Thanks to NOtherDev for the contribution.
0.3.0	Addressed Breaking change removing bluebird #266. Appologies for any inconvenience. Added Promise library dependency injection. See Config section for more details.
0.3.1	Merged Update dependencies #279. Thanks to holm for the contribution. Merged Minor fixes for stream handling #267. Thanks to holm for the contribution. Added automated tests in phantomjs for the browserified code.
0.4.0	Fixed issue Boolean cell with value ="true" is returned as 1 #278. The fix involved adding two new Call Value types: Boolean Value Error Value Note: Minor version has been bumped up to 4 as this release introduces a couple of interface changes: Boolean cells previously will have returned 1 or 0 will now return true or false Error cells that previously returned a string value will now return an error structure Fixed issue Code correctness - setters don't return a value #280. Addressed issue v0.3.1 breaks meteor build #288.
0.4.1	Merged Add support for cp:contentStatus #285. Thanks to holm for the contribution. Merged Fix Valid characters in XML (allow \n and \r when saving) #286. Thanks to Rycochet for the contribution. Fixed hyperlink with query arguments corrupts workbook #275. The hyperlink target is not escaped before serialising in the xml.
0.4.2	Addressed the following issues: White text and borders being changed to black #290 Losing formatting/pivot table from loaded file #261 Solid fill become black #272 These issues are potentially caused by a bug that caused colours with zero themes, tints or indexes to be rendered and parsed incorrectly. Regarding themes: the theme files stored inside the xlsx container hold important information regarding colours, styles etc and if the theme information from a loaded xlsx file is lost, the results can be unpredictable and undesirable. To address this, when an ExcelJS Workbook parses an XLSX file, it will preserve any theme files it finds and include them when writing to a new XLSX. If this behaviour is not desired, the Workbook class exposes a clearThemes() function which will drop the theme content. Note that this behaviour is only implemented in the document based Workbook class, not the streamed Reader and Writer.
0.4.3	Merged Support error references in cell ranges #294. Thanks to holm for the contribution.
0.4.4	Merged Issue with copied cells #297. This merge adds support for shared formulas. Thanks to muscapades for the contribution.
0.4.6	Merged Correct spelling #304. Thanks to toanalien for the contribution. Merged Added support for auto filters #306. This adds Auto Filters to the Worksheet. Thanks to C4rmond4i for the contribution. Restored NodeJS 4.0.0 compatability by removing the destructuring code. My apologies for any inconvenience.
0.4.9	Switching to transpiled code for distribution. This will ensure compatability with 4.0.0 and above from here on. And it will also allow use of much more expressive JS code in the lib folder! Basic Image Support!Images can now be added to worksheets either as a tiled background or stretched over a range. Note: other features like rotation, etc. are not supported yet and will reqeuire further work.
0.4.10	Merged Add missing Office Rels #319. Thanks goes to mauriciovillalobos for the contribution. Merged Add printTitlesRow Support #320 Thanks goes to psellers89 for the contribution.
0.4.11	Merged Avoid error on anchor with no media #327. Thanks goes to holm for the contribution. Merged Assortment of fixes for streaming read #332. Thanks goes to holm for the contribution.
0.4.12	Merged Don’t set address if hyperlink r:id is undefined #334. Thanks goes to holm for the contribution.
0.4.13	Merged Issue 296 #343. This fixes Issue with writing newlines #296. Thanks goes to holly-weisser for the contribution.
0.4.14	Merged Syntax highlighting added ✨ #350. Thanks goes to rmariuzzo for the contribution.
0.5.0	Merged Fix right to left issues #356. Fixes Add option to RTL file #72 and Adding an option to set RTL worksheet #126. Big thank you to alitaheri for this contribution.
0.5.1	Merged Fix #345 TypeError: Cannot read property 'date1904' of undefined #364. This fixes TypeError: Cannot read property 'date1904' of undefined #345. Thanks to Diluka for this contribution.
0.6.0	Merged Add rowBreaks feature. #389. Thanks to brucejo75 for this contribution.
0.6.1	Merged Guard null model fields - fix and tests #403. Thanks to thecjharries for this contribution. Also thanks to Ryc O'Chet for help with reviewing.
0.6.2	Merged Add some comments in readme according csv importing #396. Thanks to Michael Lelyakin for this contribution. Also thanks to planemar for help with reviewing. This also closes csv to stream doesn't work #395.
0.7.0	Merged Impl <xdr:twoCellAnchor editAs=oneCell> #407. Thanks to Ocke Janssen and Kay Ramme for this contribution. This change allows control on how images are anchored to cells.
0.7.1	Merged Don't break when attempting to import a zip file that's not an Excel file (eg. .numbers) #423. Thanks to Andreas Lind for this contribution. This change makes exceljs more reslilient when opening non-excel files. Merged Fixes #419 : Updates readme. #434. Thanks to Vishnu Kyatannawar for this contribution. Merged Don't break when docProps/core.xml contains a <cp:version> tag #436. Thanks to Andreas Lind for this contribution. This change handles core.xml files with empty version tags.
0.8.0	Merged Add Base64 Image support for the .addImage() method #442. Thanks to James W Mann for this contribution. Merged update moment to 2.19.3 #453. Thanks to Markan Patel for this contribution.
0.8.1	Merged Additional information about font family property #457. Thanks to kayakyakr for this contribution. Merged Fixes #458 #459. This fixes Add style to column causes it to be hidden #458. Thanks to Alexander James Phillips for this contribution.
0.8.2	Merged Don't break when loading an Excel file containing a chartsheet #466. Thanks to Andreas Lind for this contribution. Merged Hotfix/sheet order#257 #471. This fixes Sheet Order #257. Thanks to Robbi for this contribution.
0.8.3	Assimilated fix #79 outdated dependencies in unzip2. Thanks to Jules Sam. Randolph for starting this fix and a really big thanks to Alexander Kachkaev for finding the final solution.
0.8.4	Merged Round Excel date to nearest millisecond when converting to javascript date #479. Thanks to Benoit Jean for this contribution.
0.8.5	Merged Bug fix: wb.worksheets/wb.eachSheet caused getWorksheet(0) to return sheet #485. Thanks to mah110020 for this contribution.
0.9.0	Merged Feature/issue 424 #489. This fixes No way to control summaryBelow or summaryRight #424. Many thanks to Sarah for this contribution.
0.9.1	Merged add type definition #490. This adds type definitions to ExcelJS! Many thanks to taoqf for this contribution.
1.0.0	Merged Add Node 8 and Node 9 to continuous integration testing #494. Many thanks to Markan Patel for this contribution. Merged Small README fix #508. Many thanks to Guilherme Bernal for this contribution. Merged Add support for inlineStr, including rich text #501. Many thanks to linguamatics-pdenes and Rob Scott for their efforts towards this contribution. Since this change is technically a breaking change (the rendered XML for inline strings will change) I'm making this a major release!
1.0.1	Fixed spliceColumns problem when the number of columns are important #520.
1.0.2	Merged Loosen exceljs's dependency requirements for moment #524. Many thanks to nicoladefranceschi for this contribution. This change addresses Ability to use external "moment" package #517.
1.1.0	Addressed Is there a way inserting values in columns. #514. Added a new getter/setter property to Column to get and set column values (see Columns for details).
1.1.1	Merged Include index.d.ts in published packages #532. To fix TypeScript definitions missing from npm package #525. Many thanks to Kagami Sascha Rosylight for this contribution.
1.1.2	Merged Don't break when docProps/core.xml contains <cp:contentType /> #536. Many thanks to Andreas Lind (and reviewers) for this contribution.
1.1.3	Merged Try to handle the case where a <c> element is missing an r attribute #537. Many thanks to Andreas Lind for this contribution.
1.2.0	Merged Add dateUTC flag to CSV Writing #544. Many thanks to Zackery Griesinger for this contribution.
1.2.1	Merged worksheet name is writable #547. Many thanks to xzper for this contribution.
1.3.0	Merged Add CSV write buffer support #549. Many thanks to Jarom Loveridge for this contribution.
1.4.2	Merged Discussion: Customizable row/cell limit #541. Many thanks to Andreas Lind for this contribution.
1.4.3	Merged Get the right text out of hyperlinked formula cells #552. Many thanks to Andreas Lind and Christian Holm for this contribution.
1.4.5	Merged Add test case with a huge file #556. Many thanks to Andreas Lind and Christian Holm for this contribution.
1.4.6	Merged Update README.md to reflect correct functionality of row.addPageBreak() #557. Many thanks to RajDesai for this contribution. Merged fix index.d.ts #558. Many thanks to Diluka for this contribution.
1.4.7	Merged List /xl/sharedStrings.xml in [Content_Types].xml only if one of the … #562. Many thanks to Priidik Vaikla for this contribution.
1.4.8	Merged List /xl/sharedStrings.xml in [Content_Types].xml only if one of the … #562. Many thanks to Priidik Vaikla for this contribution. Fixed issue with above where shared strings were used but the content type was not added.
1.4.9	Merged List /xl/sharedStrings.xml in [Content_Types].xml only if one of the … #562. Many thanks to Priidik Vaikla for this contribution. Fixed issue with above where shared strings were used but the content type was not added. Fixed issue 1.4.8 broke writing Excel files with useSharedStrings:true #581.
1.4.10	Merged core-xform: Tolerate a missing cp: namespace for the coreProperties element #564. Many thanks to Andreas Lind for this contribution.
1.4.12	Merged Avoid error on malformed address #567. Many thanks to Andreas Lind for this contribution. Merged Added a missing Promise<void> in index.d.ts #571. Many thanks to Gabriel Fournier for this contribution. This release should fix Is workbook.commit() still a promise or not #548
1.4.13	Merged Issue #488 #574. Many thanks to dljenkins for this contribution. This release should fix Invalid time value Exception #488.
1.5.0	Merged Sheet add state for hidden or show #577. Many thanks to Freddie Hsinfu Huang for this contribution. This release should fix hide worksheet and reorder sheets #226.
1.5.1	Merged Update index.d.ts #582. Many thanks to hankolsen for this contribution. Merged Decode the x<4 hex chars> escape notation in shared strings #584. Many thanks to Andreas Lind for this contribution.
1.6.0	Added .html property to Cells to facilitate html-safe rendering. See Handling Individual Cells for details.
1.6.1	Merged Fix Issue #488 where dt is an invalid date format. #587 to fix Invalid time value Exception #488. Many thanks to Iliya Zubakin for this contribution.
1.6.2	Merged Fix Issue #488 where dt is an invalid date format. #587 to fix Invalid time value Exception #488. Many thanks to Iliya Zubakin for this contribution. Merged drawing element must be below rowBreaks according to spec or corrupt worksheet #590 Many thanks to Liam Neville for this contribution.
1.6.3	Merged set type optional #595 Many thanks to taoqf for this contribution. Merged Fix some xlsx stream read xlsx not in guaranteed order problem #578 Many thanks to KMethod for this contribution. Merged Fix formatting issue in README #599 Many thanks to Vishnu Kyatannawar for this contribution.
1.7.0	Merged Ability to set tooltip for hyperlink #602 Many thanks to Kuznetsov Aleksey for this contribution.
1.8.0	Merged Fix misinterpreted ranges from <definedName> #636 Many thanks to Andreas Lind for this contribution. Merged Add LGTM code quality badges #640 Many thanks to Xavier RENE-CORAIL for this contribution. Merged Add type definition for Column.values #646 Many thanks to Emil Laine for this contribution. This fixes Column.values is missing TypeScript definitions #645. Merged Update README.md with load() option #663 Many thanks to Joanna Walker for this contribution. Merged fixed packages according to npm audit #677 Many thanks to Manuel Minuti for this contribution. Merged Update index.d.ts #699 Many thanks to Ray Yen for this contribution. Merged Replaced node-unzip-2 to unzipper package which is more robust #708 Many thanks to johnmalkovich100 for this contribution. Merged Read worksheet hidden state #728 Many thanks to Dishu(Lester) Lyu for this contribution. Merged add Worksheet.state typescript definition fix #714 #736 Many thanks to Ilyes Kechidi for this contribution. This fixes Worksheet State does not exist in index.d.ts #714.
1.9.0	Merged Improvements for images (correct reading/writing possitions) #702. This fixes Image location don't respect Column width #650 and Image position - stretching image #467. Many thanks to Siemienik Paweł for this contribution.
1.9.1	Merged Add Typescript support for formulas without results #619. Many thanks to Loursin for this contribution. Merged Fix existing row styles when using spliceRows #737. Many thanks to cxam for this contribution. Merged Consistent code quality #774. Many thanks to Andreas Lubbe for this contribution.
1.10.0	Fixed effect of splicing rows and columns on defined names Merged Add support for adding images anchored to one cell #746. Many thanks to Karl von Randow for this contribution. Merged Add vertical align property #758. Many thanks to MikeZyatkov for this contribution. Merged Replace the temp lib to tmp #775. Many thanks to Ivan Sotnikov for this contribution. Merged Replace the temp lib to tmp #775. Many thanks to Andreas Lubbe for this contribution. Merged Update Worksheet.dimensions return type #793. Many thanks to Siemienik Paweł for this contribution. Merged One more types fix #795. Many thanks to Siemienik Paweł for this contribution.
1.11.0	Merged Add the ability to bail out of parsing if the number of columns exceeds a given limit #776. Many thanks to Andreas Lind for this contribution. Merged Add support for repeated columns on every page when printing. #799. Many thanks to Jasmin Auger for this contribution. Merged Do not use a promise polyfill on modern setups #815. Many thanks to Andreas Lubbe for this contribution. Merged copy LICENSE to the dist folder #807. Many thanks to Yuping Zuo for this contribution. Merged Avoid unhandled rejection on XML parse error #813. Many thanks to Andreas Lind for this contribution.
1.12.0	Merged (chore) increment unzipper to 0.9.12 to address npm advisory 886 #819. Many thanks to Kreig Zimmerman for this contribution. Merged docs(README): improve docs #817. Many thanks to Yuping Zuo for this contribution. Merged add comment support #529 #823. Many thanks to ilimei for this contribution. This fixes the following issues: Is it possible to add comment on a cell? #202 Add comment to cell #451 Excel add comment on cell #503 How to add Cell comment #529 Please add example to how I can insert comments for a cell #707
1.12.1	Merged fix issue with print area defined name corrupting file #822. Many thanks to Julia Donaldson for this contribution. This fixes issue Defined Names Break/Corrupt Excel File into Repair Mode #664. Merged Only keep at most 31 characters for sheetname #831. Many thanks to Xuebin He for this contribution. This fixes issue Limit worksheet name length to 31 characters #398.
1.12.2	Merged add cn doc #834 and update cn doc #852. Many thanks to flydragon for this contribution. Merged fix minor spelling mistake in readme #853. Many thanks to John Varga for this contribution. Merged Fix defaultRowHeight not working #855. Many thanks to autukill for this contribution. This should fix row height doesn't apply to row #422, The worksheet.properties.defaultRowHeight can't work!! How to set the rows height, help!! #634 and Default row height doesn't work ? #696. Merged Always keep first font #854. Many thanks to Dmitriy Gusev for this contribution. This should fix document scale (width only) is different after read & write #816, Default font from source document can not be parsed. #833 and Wrong base font: hardcoded Calibri instead of font from the document #849.
1.13.0	Merged zip: allow tuning compression for performance or size #862. Many thanks to myfreeer for this contribution. Merged Feat configure headers and footers #863. Many thanks to autukill for this contribution. Fixed an issue with defaultRowHeight where the default value resulted in 'customHeight' property being set.

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Package last updated on 30 Oct 2019

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Install

exceljs-lightweight

Exceljs-lightweight

Installation

New Features!

Contributions

Backlog

Contents

Interface

Importing

Create a Workbook

Set Workbook Properties

Workbook Views

Add a Worksheet

Remove a Worksheet

Access Worksheets

Worksheet State

Worksheet Properties

Worksheet Metrics

Page Setup

Headers and Footers

Worksheet Views

Frozen Views

Split Views

Auto filters

Columns

Rows

Handling Individual Cells

Merged Cells

Defined Names

Data Validations

Cell Comments

Styles

Number Formats

Fonts

Alignment

Borders

Fills

Pattern Fills

Gradient Fills

Rich Text

Outline Levels

Images

Add Image to Workbook

Add image background to worksheet

Add image over a range

Add image to a cell

File I/O

XLSX

Reading XLSX

Writing XLSX

CSV

Reading CSV

Writing CSV

Streaming I/O

Streaming XLSX

Streaming XLSX Writer

Browser

Prebundled

Value Types

Null Value

Merge Cell

Number Value

String Value

Date Value

Hyperlink Value

Formula Value

Shared Formula

Formula Type

Rich Text Value

Boolean Value

Error Value

Interface Changes

0.1.0

Worksheet.eachRow

Worksheet.getRow

0.1.1

cell.model

0.2.44

Config

Caveats