index.d.ts

declare interface Buffer extends ArrayBuffer { }
declare interface Stream { }
declare interface Writable { }

export const enum RelationshipType {
	None = 0,
	OfficeDocument = 1,
	Worksheet = 2,
	CalcChain = 3,
	SharedStrings = 4,
	Styles = 5,
	Theme = 6,
	Hyperlink = 7
}

export const enum DocumentType {
	Xlsx = 1
}

export const enum PaperSize {
	Legal = 5,
	Executive = 7,
	A4 = 9,
	A5 = 11,
	B5 = 13,
	Envelope_10 = 20,
	Envelope_DL = 27,
	Envelope_C5 = 28,
	Envelope_B5 = 34,
	Envelope_Monarch = 37,
	Double_Japan_Postcard_Rotated = 82,
	K16_197x273_mm = 119,
}

export interface WorksheetViewCommon {
	/**
	 * Sets the worksheet view's orientation to right-to-left, `false` by default
	 */
	rightToLeft: boolean;

	/**
	 * The currently selected cell
	 */
	activeCell: string;

	/**
	 * Shows or hides the ruler in Page Layout, `true` by default
	 */
	showRuler: boolean;

	/**
	 * Shows or hides the row and column headers (e.g. A1, B1 at the top and 1,2,3 on the left,
	 * `true` by default
	 */
	showRowColHeaders: boolean;

	/**
	 * Shows or hides the gridlines (shown for cells where borders have not been defined),
	 * `true` by default
	 */
	showGridLines: boolean;

	/**
	 * 	Percentage zoom to use for the view, `100` by default
	 */
	zoomScale: number;

	/**
	 * 	Normal zoom for the view, `100` by default
	 */
	zoomScaleNormal: number;
}

export interface WorksheetViewNormal {
	/**
	 * Controls the view state
	 */
	state: 'normal';

	/**
	 * Presentation style
	 */
	style: 'pageBreakPreview' | 'pageLayout';
}

export interface WorksheetViewFrozen {
	/**
	 * Where a number of rows and columns to the top and left are frozen in place.
	 * Only the bottom left section will scroll
	 */
	state: 'frozen';

	/**
	 * Presentation style
	 */
	style?: 'pageBreakPreview';

	/**
	 * How many columns to freeze. To freeze rows only, set this to 0 or undefined
	 */
	xSplit?: number;

	/**
	 * How many rows to freeze. To freeze columns only, set this to 0 or undefined
	 */
	ySplit?: number;

	/**
	 * Which cell will be top-left in the bottom-right pane. Note: cannot be a frozen cell.
	 * Defaults to first unfrozen cell
	 */
	topLeftCell?: string;
}

export interface WorksheetViewSplit {
	/**
	 * Where the view is split into 4 sections, each semi-independently scrollable.
	 */
	state: 'split';

	/**
	 * Presentation style
	 */
	style?: 'pageBreakPreview' | 'pageLayout';

	/**
	 * How many points from the left to place the splitter.
	 * To split vertically, set this to 0 or undefined
	 */
	xSplit?: number;

	/**
	 * How many points from the top to place the splitter.
	 * To split horizontally, set this to 0 or undefined
	 */
	ySplit?: number;

	/**
	 * Which cell will be top-left in the bottom-right pane
	 */
	topLeftCell?: string;

	/**
	 * Which pane will be active
	 */
	activePane?: 'topLeft' | 'topRight' | 'bottomLeft' | 'bottomRight';
}

export type WorksheetView =
	& WorksheetViewCommon
	& (WorksheetViewNormal | WorksheetViewFrozen | WorksheetViewSplit);

export interface WorkbookView {
	x: number;
	y: number;
	width: number;
	height: number;
	firstSheet: number;
	activeTab: number;
	visibility: string;
}

export type FillPatterns =
	| 'none' | 'solid'
	| 'darkVertical' | 'darkHorizontal' | 'darkGrid' | 'darkTrellis' | 'darkDown' | 'darkUp'
	| 'lightVertical' | 'lightHorizontal' | 'lightGrid' | 'lightTrellis' | 'lightDown' | 'lightUp'
	| 'darkGray' | 'mediumGray' | 'lightGray' | 'gray125' | 'gray0625';

export interface FillPattern {
	type: 'pattern';
	pattern: FillPatterns;
	fgColor: Partial<Color>;
	bgColor?: Partial<Color>;
}

export interface GradientStop {
	position: number;
	color: Partial<Color>;
}

export interface FillGradientAngle {
	type: 'gradient';
	gradient: '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
	 */
	degree: number;

	/**
	 * 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.
	 */
	stops: GradientStop[];
}

export interface FillGradientPath {
	type: 'gradient';
	gradient: 'path';

	/**
	 * For 'path' gradient. Specifies the relative coordinates for the start of the path.
	 * 'left' and 'top' values range from 0 to 1
	 */
	center: { left: number; top: number };

	/**
	 * 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.
	 */
	stops: GradientStop[];
}

export type Fill = FillPattern | FillGradientAngle | FillGradientPath;

export interface Font {
	name: string;
	size: number;
	family: number;
	scheme: 'minor' | 'major' | 'none';
	charset: number;
	color: Partial<Color>;
	bold: boolean;
	italic: boolean;
	underline: boolean | 'none' | 'single' | 'double' | 'singleAccounting' | 'doubleAccounting';
	vertAlign: 'superscript' | 'subscript';
	strike: boolean;
	outline: boolean;
}

export type BorderStyle =
	| 'thin' | 'dotted' | 'hair' | 'medium' | 'double' | 'thick' | 'dashDot'
	| 'dashDotDot' | 'slantDashDot' | 'mediumDashed' | 'mediumDashDotDot' | 'mediumDashDot';

export interface Color {
	/**
	 * Hex string for alpha-red-green-blue e.g. FF00FF00
	 */
	argb: string;

	/**
	 * Choose a theme by index
	 */
	theme: number;
}

export interface Border {
	style: BorderStyle;
	color: Partial<Color>;
}

export interface BorderDiagonal extends Border {
	up: boolean;
	down: boolean;
}

export interface Borders {
	top: Partial<Border>;
	left: Partial<Border>;
	bottom: Partial<Border>;
	right: Partial<Border>;
	diagonal: Partial<BorderDiagonal>;
}

export interface Margins {
	top: number;
	left: number;
	bottom: number;
	right: number;
	header: number;
	footer: number;
}

export const enum ReadingOrder {
	LeftToRight = 1,
	RightToLeft = 2,
}

export interface Alignment {
	horizontal: 'left' | 'center' | 'right' | 'fill' | 'justify' | 'centerContinuous' | 'distributed';
	vertical: 'top' | 'middle' | 'bottom' | 'distributed' | 'justify';
	wrapText: boolean;
	indent: number;
	readingOrder: 'rtl' | 'ltr';
	textRotation: number | 'vertical';
}

export interface Style {
	numFmt: string;
	font: Partial<Font>;
	alignment: Partial<Alignment>;
	border: Partial<Borders>;
	fill: Fill;
}

export type DataValidationOperator =
	| 'between' | 'notBetween' | 'equal' | 'notEqual' | 'greaterThan' | 'lessThan'
	| 'greaterThanOrEqual' | 'lessThanOrEqual';

export interface DataValidation {
	type: 'list' | 'whole' | 'decimal' | 'date' | 'textLength' | 'custom';
	formulae: any[];
	allowBlank?: boolean;
	operator?: DataValidationOperator;
	error?: string;
	errorTitle?: string;
	errorStyle?: string;
	prompt?: string;
	promptTitle?: string;
	showErrorMessage?: boolean;
	showInputMessage?: boolean;
}

export interface CellErrorValue {
	error: '#N/A' | '#REF!' | '#NAME?' | '#DIV/0!' | '#NULL!' | '#VALUE!' | '#NUM!';
}

export interface RichText {
	text: string;
	font?: Partial<Font>;
}

export interface CellRichTextValue {
	richText: RichText[];
}

export interface CellHyperlinkValue {
	text: string;
	hyperlink: string;
}

export interface CellFormulaValue {
	formula: string;
	result?: number | string | Date | { error: CellErrorValue };
	date1904: boolean;
}

export interface CellSharedFormulaValue {
	sharedFormula: string;
	readonly formula?: string;
	result?: number | string | Date | { error: CellErrorValue };
	date1904: boolean;
}

export const enum ValueType {
	Null = 0,
	Merge = 1,
	Number = 2,
	String = 3,
	Date = 4,
	Hyperlink = 5,
	Formula = 6,
	SharedString = 7,
	RichText = 8,
	Boolean = 9,
	Error = 10
}

export const enum FormulaType {
	None = 0,
	Master = 1,
	Shared = 2
}

export type CellValue =
	| null | number | string | boolean | Date
	| CellErrorValue
	| CellRichTextValue | CellHyperlinkValue
	| CellFormulaValue | CellSharedFormulaValue;

export interface Comment {
	texts: RichText[];
}

export interface CellModel {
	address: Address;
	style: Style;
	type: ValueType;
	text?: string;
	hyperlink?: string;
	value?: CellValue;
	master: Cell;
	formula?: string;
	sharedFormula?: string;
	result?: string | number | any;
	comment: Comment;
}

export interface Cell extends Style, Address {
	readonly worksheet: Worksheet;
	readonly workbook: Workbook;

	readonly effectiveType: ValueType;
	readonly isMerged: boolean;
	readonly master: Cell;
	readonly isHyperlink: boolean;
	readonly hyperlink: string;	// todo
	readonly text: string;
	readonly fullAddress: {
		sheetName: string;
		address: Address;
		row: Row;
		col: Column;
	};
	model: CellModel;
	/**
	 * Assign (or get) a name for a cell (will overwrite any other names that cell had)
	 */
	name: string;

	/**
	 * Assign (or get) an array of names for a cell (cells can have more than one name)
	 */
	names: string[];

	/**
	 * Cells can define what values are valid or not and provide
	 * prompting to the user to help guide them.
	 */
	dataValidation: DataValidation;

	/**
	 * Value of the cell
	 */
	value: CellValue;

	/**
	 * comment of the cell
	 */
	comment: Comment;

	/**
	 * convenience getter to access the formula
	 */
	readonly formula: string;

	/**
	 * convenience getter to access the formula result
	 */
	readonly result: number | string | Date;

	/**
	 * The type of the cell's value
	 */
	readonly type: ValueType;

	/**
	 * The type of the cell's formula
	 */
	readonly formulaType: FormulaType;

	/**
	 * The styles of the cell
	 */
	style: Partial<Style>;

	addName(name: string): void;

	/**
	 * Remove a name from a cell
	 */
	removeName(name: string): void;
	removeAllNames(): void;

	destroy(): void;
	toCsvString(): string;
	release(): void;
	addMergeRef(): void;
	releaseMergeRef(): void;
	merge(master: Cell): void;
	unmerge(): void;
	isMergedTo(master: Cell): boolean;
	toString(): string;
}

export interface RowModel {
	cells: CellModel[];
	number: number;
	min: number;
	max: number;
	height: number;
	style: Partial<Style>;
	hidden: boolean;
	outlineLevel: number;
	collapsed: boolean;
}

export interface Row extends Style {
	readonly worksheet: Worksheet;
	readonly hasValues: boolean;
	readonly dimensions: number;
	model: Partial<RowModel> | null;
	/**
	 * Set a specific row height
	 */
	height: number;

	/**
	 * Make row hidden
	 */
	hidden: boolean;

	/**
	 * Get a row as a sparse array
	 */
	// readonly values: CellValue[];
	values: CellValue[] | { [key: string]: CellValue };

	/**
	 * Set an outline level for rows
	 */
	outlineLevel?: number;

	/**
	 * The row number
	 */
	readonly number: number;

	/**
	 * Indicate the collapsed state based on outlineLevel
	 */
	readonly collapsed: boolean;

	/**
	 * Number of non-empty cells
	 */
	readonly cellCount: number;

	/**
	 * Number of cells including empty ones
	 */
	readonly actualCellCount: number;

	/**
	 * Get cell by number, column letter or column key
	 */
	getCell(indexOrKey: number | string): Cell;

	findCell(colNumber: number): Cell | undefined;

	getCellEx(address: Address): Cell;

	/**
	 * Iterate over all non-null cells in a row
	 */
	eachCell(callback: (cell: Cell, colNumber: number) => void): void;

	/**
	 * Iterate over all cells in a row (including empty cells)
	 */
	eachCell(opt: { includeEmpty: boolean }, callback: (cell: Cell, colNumber: number) => void): void;

	/**
	 * Cut one or more cells (cells to the right are shifted left)
	 *
	 * Note: this operation will not affect other rows
	 */
	splice(start: number, count: number, ...insert: any[]): void;

	/**
	 * Commit a completed row to stream
	 */
	commit(): void;
	destroy(): void;
	addPageBreak(lft?: number, rght?: number): void;
}

export interface Column {
	/**
	 * Can be a string to set one row high header or an array to set multi-row high header
	 */
	header: string | string[];

	/**
	 * The name of the properties associated with this column in each row
	 */
	key: string;

	/**
	 * The width of the column
	 */
	width: number;

	/**
	 * Set an outline level for columns
	 */
	outlineLevel: number;

	/**
	 * Hides the column
	 */
	hidden: boolean;

	/**
	 * Styles applied to the column
	 */
	style: Partial<Style>;

	/**
	 * The cell values in the column
	 */
	values: ReadonlyArray<CellValue>;
}

export interface ColumnExtension extends Partial<Style> {
	/**
	 * indicate the collapsed state based on outlineLevel
	 */
	readonly collapsed: boolean;

	/**
	 * Iterate over all current cells in this column
	 */
	eachCell(callback: (cell: Cell, rowNumber: number) => void): void;

	/**
	 * Iterate over all current cells in this column including empty cells
	 */
	eachCell(opt: { includeEmpty: boolean }, callback: (cell: Cell, rowNumber: number) => void): void;
}

export interface PageSetup {
	/**
	 * Whitespace on the borders of the page. Units are inches.
	 */
	margins: Margins;

	/**
	 * Orientation of the page - i.e. taller (`'portrait'`) or wider (`'landscape'`).
	 *
	 * `'portrait'` by default
	 */
	orientation: 'portrait' | 'landscape';

	/**
	 * Horizontal Dots per Inch. Default value is 4294967295
	 */
	horizontalDpi: number;

	/**
	 * Vertical Dots per Inch. Default value is 4294967295
	 */
	verticalDpi: number;

	/**
	 * 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)
	 */
	fitToPage: boolean;

	/**
	 * How many pages wide the sheet should print on to. Active when fitToPage is true
	 *
	 * Default is 1
	 */
	fitToWidth: number;

	/**
	 * How many pages high the sheet should print on to. Active when fitToPage is true
	 *
	 * Default is 1
	 */
	fitToHeight: number;

	/**
	 * Percentage value to increase or reduce the size of the print. Active when fitToPage is false
	 *
	 * Default is 100
	 */
	scale: number;

	/**
	 * Which order to print the pages.
	 *
	 * Default is `downThenOver`
	 */
	pageOrder: 'downThenOver' | 'overThenDown';

	/**
	 * Print without colour
	 *
	 * false by default
	 */
	blackAndWhite: boolean;

	/**
	 * Print with less quality (and ink)
	 *
	 * false by default
	 */
	draft: boolean;

	/**
	 * Where to place comments
	 *
	 * Default is `None`
	 */
	cellComments: 'atEnd' | 'asDisplayed' | 'None';

	/**
	 * Where to show errors
	 *
	 * Default is `displayed`
	 */
	errors: 'dash' | 'blank' | 'NA' | 'displayed';

	/**
	 * 	What paper size to use (see below)
	 *
	 * | 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`      |
	 */
	paperSize: PaperSize;

	/**
	 * Whether to show the row numbers and column letters, `false` by default
	 */
	showRowColHeaders: boolean;

	/**
	 * Whether to show grid lines, `false` by default
	 */
	showGridLines: boolean;

	/**
	 * Which number to use for the first page
	 */
	firstPageNumber: number;

	/**
	 * 	Whether to center the sheet data horizontally, `false` by default
	 */
	horizontalCentered: boolean;

	/**
	 * 	Whether to center the sheet data vertically, `false` by default
	 */
	verticalCentered: boolean;

	/**
	 * Set Print Area for a sheet, e.g. `'A1:G20'`
	 */
	printArea: string;

	/**
	 * Repeat specific rows on every printed page, e.g. `'1:3'`
	 */
	printTitlesRow: string;

	/**
	 * Repeat specific columns on every printed page, e.g. `'A:C'`
	 */
	printTitlesColumn: string;
}

export interface HeaderFooter {
	/**
	 * Set the value of differentFirst as true, which indicates that headers/footers for first page are different from the other pages, `false` by default
	 */
	differentFirst: boolean,
	/**
	 * Set the value of differentOddEven as true, which indicates that headers/footers for odd and even pages are different, `false` by default
	 */
	differentOddEven: boolean,
	/**
	 * Set header string for odd pages, could format the string and `null` by default
	 */
	oddHeader: string,
	/**
	 * Set footer string for odd pages, could format the string and `null` by default
	 */
	oddFooter: string,
	/**
	 * Set header string for even pages, could format the string and `null` by default
	 */
	evenHeader: string,
	/**
	 * Set footer string for even pages, could format the string and `null` by default
	 */
	evenFooter: string,
	/**
	 * Set header string for the first page, could format the string and `null` by default
	 */
	firstHeader: string,
	/**
	 * Set footer string for the first page, could format the string and `null` by default
	 */
	firstFooter: string
}

export type AutoFilter = string | {
	from: string | { row: number; column: number };
	to: string | { row: number; column: number };
};

export interface Image {
	extension: 'jpeg' | 'png' | 'gif';
	base64?: string;
	filename?: string;
	buffer?: Buffer;
}
export interface IAnchor {
	col: number;
	row: number;
	nativeCol: number;
	nativeRow: number;
	nativeColOff: number;
	nativeRowOff: number;
}
export class Anchor implements IAnchor {
	col: number;
	nativeCol: number;
	nativeColOff: number;
	nativeRow: number;
	nativeRowOff: number;
	row: number;

	private readonly colWidth: number;
	private readonly rowHeight: number;
	worksheet: Worksheet;

	constructor(model?: IAnchor | object);
}
export interface ImageRange {
	tl: { col: number; row: number } | Anchor;
	br: { col: number; row: number } | Anchor;
}

export interface ImagePosition {
	tl: { col: number; row: number };
	ext: { width: number; height: number };
}

export interface Range extends Location {
	sheetName: string;

	tl: string;
	$t$l: string;

	br: string;
	$b$r: string;

	range: string;
	$range: string;

	shortRange: string;
	$shortRange: string;

	count: number;

	decode(): void;
	decode(v: Range): void;
	decode(v: string): void;
	decode(v: Location): void;
	decode(top: number, left: number, bottom: number, right: number, sheetName?: string): void;
	decode(tl: string, br: string, sheetName?: string): void;
	decode(v: [string, string]): void;
	decode(v: [string, string, string]): void;
	decode(v: [number, number, number, number]): void;
	decode(v: [number, number, number, number, string]): void;

	expand(top: number, left: number, bottom: number, right: number): void;

	expandRow(row: Row): void;

	expandToAddress(addressStr: string): void;

	toString(): string;

	intersects(other: Range): boolean;

	contains(addressStr: string): boolean;

	containsEx(address: Partial<{
		sheetName: string;
		row: number;
		col: number;
	}>): boolean;
}

export interface RowBreak {
	id: number;
	max: number;
	min: number;
	man: number;
}

export interface WorksheetModel {
	id: number;
	name: string;
	// dataValidations: this.dataValidations.model,
	properties: WorksheetProperties;
	pageSetup: Partial<PageSetup>;
	headerFooter: HeaderFooter;
	rowBreaks: RowBreak[];
	views: WorksheetView[];
	autoFilter: AutoFilter;
	media: Media[];
}
export type WorksheetState = 'visible' | 'hidden' | 'veryHidden';

export interface Worksheet {
	readonly id: number;
	name: string;
	readonly workbook: Workbook;
	readonly hasMerges: boolean;

	readonly dimensions: Range;
	/**
	 * Contains information related to how a worksheet is printed
	 */
	pageSetup: Partial<PageSetup>;

	/**
	 * Worksheet Header and Footer
	 */
	headerFooter: HeaderFooter;

	/**
	 * Worksheet State
	 */
	state: WorksheetState;

	/**
	 * Worksheet Properties
	 */
	properties: WorksheetProperties;

	/**
	 * Open panes representing the sheet
	 */
	views: Array<Partial<WorksheetView>>;

	/**
	 * Apply an auto filter to your worksheet.
	 */
	autoFilter?: AutoFilter;

	destroy(): void;

	/**
	 * 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.
	 */
	readonly actualRowCount: number;

	/**
	 * The total column size of the document. Equal to the maximum cell count from all of the rows
	 */
	readonly columnCount: number;

	/**
	 * A count of the number of columns that have values.
	 */
	readonly actualColumnCount: number;

	getColumnKey(key: string): Partial<Column>;

	setColumnKey(key: string, value: Partial<Column>): void;

	deleteColumnKey(key: string): void;

	eachColumnKey(callback: (col: Partial<Column>, index: number) => void): void;

	/**
	 * Access an individual columns by key, letter and 1-based column number
	 */
	getColumn(indexOrKey: number | string): Partial<Column> & ColumnExtension;

	/**
	 * Cut one or more columns (columns to the right are shifted left)
	 * and optionally insert more
	 *
	 * 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
	 *
	 * Also: If the worksheet has more rows than values in the colulmn inserts,
	 * the rows will still be shifted as if the values existed
	 */
	spliceColumns(start: number, count: number, ...insert: any[][]): void;

	/**
	 * 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.
	 */
	columns: Array<Partial<Column>>;

	/**
	 * The total row size of the document. Equal to the row number of the last row that has values.
	 */
	readonly rowCount: number;

	/**
	 * Get the last editable row in a worksheet (or undefined if there are none)
	 */
	readonly lastRow: Row | undefined;

	findRow(row: number): Row | undefined;

	/**
	 * Cut one or more rows (rows below are shifted up)
	 * and optionally insert more
	 *
	 * Known Issue: If a splice causes any merged cells to move, the results may be unpredictable
	 */
	spliceRows(start: number, count: number, ...insert: any[][]): void;

	/**
	 * Add a couple of Rows by key-value, after the last current row, using the column keys,
	 * or add a row by contiguous Array (assign to columns A, B & C)
	 */
	addRow(data: any[] | any): Row;

	/**
	 * Add multiple rows by providing an array of arrays or key-value pairs
	 */
	addRows(rows: any[]): void;

	/**
	 * Get or create row by 1-based index
	 */
	getRow(index: number): Row;

	/**
	 * Iterate over all rows that have values in a worksheet
	 */
	eachRow(callback: (row: Row, rowNumber: number) => void): void;

	/**
	 * Iterate over all rows (including empty rows) in a worksheet
	 */
	eachRow(opt: { includeEmpty: boolean }, callback: (row: Row, rowNumber: number) => void): void;

	/**
	 * return all rows as sparse array
	 */
	getSheetValues(): Row[];

	/**
	 * returns the cell at [r,c] or address given by r. If not found, return undefined
	 */
	findCell(r: number | string, c: number | string): Cell | undefined;

	/**
	 * Get or create cell
	 */
	getCell(r: number | string, c?: number | string): Cell;

	/**
	 * Merge cells, either:
	 *
	 * tlbr string, e.g. `'A4:B5'`
	 *
	 * tl string, br string, e.g. `'G10', 'H11'`
	 *
	 * t, l, b, r numbers, e.g. `10,11,12,13`
	 */
	mergeCells(): void;
	mergeCells(v: Range): void;
	mergeCells(v: string): void;
	mergeCells(v: Location): void;
	mergeCells(top: number, left: number, bottom: number, right: number, sheetName?: string): void;
	mergeCells(tl: string, br: string, sheetName?: string): void;
	mergeCells(v: [string, string]): void;
	mergeCells(v: [string, string, string]): void;
	mergeCells(v: [number, number, number, number]): void;
	mergeCells(v: [number, number, number, number, string]): void;

	/**
	 * unmerging the cells breaks the style links
	 */
	unMergeCells(): void;
	unMergeCells(v: Range): void;
	unMergeCells(v: string): void;
	unMergeCells(v: Location): void;
	unMergeCells(top: number, left: number, bottom: number, right: number, sheetName?: string): void;
	unMergeCells(tl: string, br: string, sheetName?: string): void;
	unMergeCells(v: [string, string]): void;
	unMergeCells(v: [string, string, string]): void;
	unMergeCells(v: [number, number, number, number]): void;
	unMergeCells(v: [number, number, number, number, string]): void;

	fillFormula(range: Range | string | Location, formula: string, results?: ((r: number, c: number) => string | number) | number[] | number[][]): void;

	/**
	 * Using the image id from `Workbook.addImage`, set the background to the worksheet
	 */
	addBackgroundImage(imageId: number): void;

	getBackgroundImageId(): string;

	/**
	 * Using the image id from `Workbook.addImage`,
	 * embed an image within the worksheet to cover a range
	 */
	addImage(imageId: number, range: string | { editAs?: string; } & ImageRange | { editAs?: string; } & ImagePosition): void;

	getImages(): Array<{
		type: 'image',
		imageId: string;
		range: ImageRange;
	}>;

	commit(): void;

	model: WorksheetModel;
}

export interface WorksheetProperties {
	/**
	 * Color of the tab
	 */
	tabColor: Partial<Color>;

	/**
	 * The worksheet column outline level (default: 0)
	 */
	outlineLevelCol: number;

	/**
	 * The worksheet row outline level (default: 0)
	 */
	outlineLevelRow: number;

	/**
	 * Default row height (default: 15)
	 */
	defaultRowHeight: number;

	/**
	 * default: 55
	 */
	dyDescent: number;
	showGridLines: boolean;
}

export interface AddWorksheetOptions {
	properties: Partial<WorksheetProperties>;
	pageSetup: Partial<PageSetup>;
	views: Array<Partial<WorksheetView>>;
	state: WorksheetState;
}

export interface WorkbookProperties {
	/**
	 * Set workbook dates to 1904 date system
	 */
	date1904: boolean;
}

export interface JSZipGeneratorOptions {
	/**
	 * @default DEFLATE
	 */
	compression: 'STORE' | 'DEFLATE';
	compressionOptions: null | {
		/**
		 * @default 6
		 */
		level: number;
	};
}

export interface XlsxWriteOptions extends stream.xlsx.WorkbookWriterOptions {
	/**
	 * The option passed to JsZip#generateAsync(options)
	 */
	zip: Partial<JSZipGeneratorOptions>;
}

export interface Xlsx {
	/**
	 * read from a file
	 */
	readFile(path: string): Promise<Workbook>;

	/**
	 * read from a stream
	 * @param stream
	 */
	read(stream: Stream): Promise<Workbook>;

	/**
	 * load from an array buffer
	 * @param buffer
	 */
	load(buffer: Buffer): Promise<Workbook>;

	/**
	 * Create input stream for reading
	 */
	createInputStream(): Writable;

	/**
	 * write to a buffer
	 */
	writeBuffer(options?: Partial<XlsxWriteOptions>): Promise<Buffer>;

	/**
	 * write to a file
	 */
	writeFile(path: string, options?: Partial<XlsxWriteOptions>): Promise<void>;

	/**
	 * write to a stream
	 */
	write(stream: Stream, options?: Partial<XlsxWriteOptions>): Promise<void>;
}

export interface CsvReadOptions {
	dateFormats: string[];
	map(value: any, index: number): any;
}

export interface CsvWriteOptions {
	dateFormat: string;
	dateUTC: boolean;
}

export interface Csv {
	/**
	 * read from a file
	 */
	readFile(path: string, options?: Partial<CsvReadOptions>): Promise<Worksheet>;

	/**
	 * read from a stream
	 */
	read(stream: Stream, options?: Partial<CsvReadOptions>): Promise<Worksheet>;

	/**
	 * Create input stream for reading
	 */
	createInputStream(): Writable;

	/**
	 * write to a buffer
	 */
	writeBuffer(): Promise<Buffer>;

	/**
	 * write to a file
	 */
	writeFile(path: string, options?: Partial<CsvWriteOptions>): Promise<void>;

	/**
	 * write to a stream
	 */
	write(stream: Stream, options?: Partial<CsvWriteOptions>): Promise<void>;
}

export interface Media {
	type: string;	// image,background
	name: string;
	extension: string;
	buffer: Buffer;
}

export interface Address {
	sheetName?: string;
	address: string;
	col: string;
	row: string;
	$col$row: string;
}

export interface Location {
	top: number;
	left: number;
	bottom: number;
	right: number;
}

export interface CellMatrix {
	addCell(addressStr: string): void;
	getCell(addressStr: string): Cell;
	findCell(addressStr: string): Cell | undefined;
	findCellAt(sheetName: string, rowNumber: number, colNumber: number): Cell | undefined;
	addCellEx(address: string | Location): void;
	getCellEx(address: string | Location): Cell;
	findCellEx(address: string | Location, create: boolean): Cell | undefined;
	getCellAt(sheetName: string, rowNumber: number, colNumber: number): Cell;
	removeCellEx(address: string | Location): void;
	forEach(callback: (cell: Cell) => void): void;
	map<T>(callback: (cell: Cell) => T): T[];
	findSheet(address: string | Location, create: boolean): Cell[] | undefined;
	findSheetRow(sheet: Cell[][], address: string | Location, create: boolean): Row | undefined;
	findRowCell(row: any[], address: Address, create: boolean): Cell | undefined;
}

export interface DefinedNamesRanges {
	name: string;
	range: string[];
}

export type DefinedNamesModel = DefinedNamesRanges[];

export interface DefinedNames {
	getMatrix(name: string): CellMatrix;
	// add a name to a cell. locStr in the form SheetName!$col$row or SheetName!$c1$r1:$c2:$r2
	add(locStr: string, name?: string): void;
	addEx(location: string | Location, name: string): Cell;

	remove(locStr: string | Location, name: string): void;
	removeEx(location: string | Location, name: string): void;
	removeAllNames(location: string | Location): void;

	forEach(callback: (name: string, cell: Cell) => void): void;

	// get all the names of a cell
	getNames(addressStr: string): string[];
	getNamesEx(address: string): string[];

	getRanges(name: string, matrix?: CellMatrix): DefinedNamesRanges;

	model: DefinedNamesModel;
}

export interface WorkbookModel {
	creator: string;
	lastModifiedBy: string;
	lastPrinted: Date;
	created: Date;
	modified: Date;
	properties: WorkbookProperties;
	worksheets: Worksheet[];
	sheets: WorksheetModel[];
	definedNames: DefinedNamesModel;
	views: WorkbookView[];
	company: string;
	manager: string;
	title: string;
	subject: string;
	keywords: string;
	category: string;
	description: string;
	language: string;
	revision: Date;
	contentStatus: string;
	themes: string[];
	media: Media[];
}

export class Workbook {
	creator: string;
	lastModifiedBy: string;
	created: Date;
	modified: Date;
	lastPrinted: Date;
	properties: WorkbookProperties;

	/**
	 * xlsx file format operations
	 */
	readonly xlsx: Xlsx;

	/**
	 * csv file format operations
	 */
	readonly csv: Csv;

	readonly nextId: number;

	readonly definedNames: DefinedNames;

	model: WorkbookModel;

	/**
	 * The Workbook views controls how many separate windows Excel will open when viewing the workbook.
	 */
	views: WorkbookView[];

	/**
	 * return a clone of worksheets in order
	 */
	worksheets: Worksheet[];

	/**
	 * Add a new worksheet and return a reference to it
	 */
	addWorksheet(name?: string, options?: Partial<AddWorksheetOptions>): Worksheet;

	removeWorksheetEx(worksheet: Worksheet): void;
	removeWorksheet(indexOrName: number | string): void;

	/**
	 * fetch sheet by name or id
	 */
	getWorksheet(indexOrName: number | string): Worksheet;

	/**
	 * Iterate over all sheets.
	 *
	 * Note: `workbook.worksheets.forEach` will still work but this is better.
	 */
	eachSheet(callback: (worksheet: Worksheet, id: number) => void): void;

	clearThemes(): void;

	/**
	 * Add Image to Workbook and return the id
	 */
	addImage(img: Image): number;

	getImage(id: number): Image;
}

export namespace config {
	function setValue(key: 'promise', promise: any): void;
}

export namespace stream {
	namespace xlsx {
		interface WorkbookWriterOptions {
			/**
			 * Specifies a writable stream to write the XLSX workbook to.
			 */
			stream: Stream;

			/**
			 * 	If stream not specified, this field specifies the path to a file to write the XLSX workbook to.
			 */
			filename: string;

			/**
			 * 	Specifies whether to use shared strings in the workbook. Default is false
			 */
			useSharedStrings: boolean;

			/**
			 * Specifies whether to add style information to the workbook.
			 * Styles can add some performance overhead. Default is false
			 */
			useStyles: boolean;
		}

		class WorkbookWriter extends Workbook {
			constructor(options: Partial<WorkbookWriterOptions>);
			// commit all worksheets, then add suplimentary files
			commit(): Promise<void>;
			addStyles(): Promise<void>;
			addThemes(): Promise<void>;
			addOfficeRels(): Promise<void>;
			addContentTypes(): Promise<void>;
			addApp(): Promise<void>;
			addCore(): Promise<void>;
			addSharedStrings(): Promise<void>;
			addWorkbookRels(): Promise<void>;
			addWorkbook(): Promise<void>;
		}
	}
}