var XLSX = require('xlsx-extract').XLSX;

	//dump arrays
	new XLSX().extract('path/to/file.xlsx', {sheet_id:1}) // or sheet_name or sheet_nr
		.on('sheet', function (sheet) {
			console.log('sheet',sheet);  //sheet is array [sheetname, sheetid, sheetnr]
		})
		.on('row', function (row) {
			console.log('row', row);  //row is a array of values or []
		})
		.on('cell', function (cell) {
			console.log('cell', cell); //cell is a value or null
		})
		.on('error', function (err) {
			console.error('error', err);
		})
		.on('end', function (err) {
			console.log('eof');
		});

	//dump by row in tsv-format
	new XLSX().extract('path/to/file.xlsx', {sheet_id:1, format:'tsv'}) // or sheet_name or sheet_nr
		.on('sheet', function (sheet) {
			console.log('sheet', sheet);  //sheet is tsv sheetname sheetnr
		})
		.on('row', function (row) {
			console.log(row); //row is a tsv line
		})
		.on('cell', function (cell) {
			console.log(cell); //cell is a tsv value
		})
		.on('error', function (err) {
			console.error(err);
		})
		.on('end', function (err) {
			console.log('eof');
		});

	//convert to tsv-file (sheet info is not written to file)
	new XLSX().convert('path/to/file.xlsx', 'path/to/destfile.tsv')
		.on('error', function (err) {
			console.error(err);
		})
		.on('end', function () {
			console.log('written');
		})

	//convert to json-file (sheet info is not written to file)
	new XLSX().convert('path/to/file.xlsx', 'path/to/destfile.json')
		.on('error', function (err) {
			console.error(err);
		})
		.on('end', function () {
			console.log('written');
		})


	demo_options = {
		//choose sheet by
        sheet_nr: 1, // default 1 - the number of the sheet starting on 1
        sheet_id: 1, // the internal sheet id
        sheet_name: 'My Sheet', // the sheet name

        ignore_header: 0,  // default 0 - the number of header lines to ignore
        include_empty_rows: false,  // default false - include empty rows in the middle/at start
        date1904: false,    // default false - use date 1904 conversion
        tsv_float_comma: false  // default false - use "," als decimal point for floats
        tsv_delimiter: '\t'  // default '\t' - use specified character to field delimiter
        format: '',     // default array - convert to 'array'||'json'||'tsv'||'obj'
        raw_values: false,   // default false - do not apply cell formats (get values as string as in xlsx)
		convert_values: { // apply cell number formats or not
			ints: true,  // rounds to int if number format is for int
			floats: true,  // rounds floats according to float number format
			dates: true,   // converts xlsx date to js date
			bools: true   // converts xlsx bool to js boolean
		}
     };