JS-XLSX Create Workook

gistfile1.js

    	var ws_name = 'SheetJS';
		/* set up workbook objects -- some of these will not be required in the future */
		var wb = {};
		wb.Sheets = {};
		wb.Props = {};
		wb.SSF = {};
		wb.SheetNames = [];

		/* create worksheet: */
		var ws = {}

		/* the range object is used to keep track of the range of the sheet */
		var range = {s: {c:0, r:0}, e: {c:0, r:0 }};
		
		for (var r=0; r !== data.length; r++) {
		
			if (range.e.r < r) {
				range.e.r = r;
			}
			
			var c = 0;
			
			for (var k in data[r]) {
			
				if(range.e.c < c) {
					range.e.c = c;
				} 
				
				var cell = { v: data[r][k].toString() };

				
				if (cell.v === null) {
					continue;
				}
				
				/* create the correct cell reference */
				var cell_ref = XLSX.utils.encode_cell({c:c,r:r});
				
				/* determine the cell type */
				if(typeof cell.v === 'number') { 
					cell.t = 'n';
				} else if ( typeof cell.v === 'boolean') { 
					cell.t = 'b'; 
				} else {
					cell.t = 's';
				}	
				
				/* add to structure */
				ws[cell_ref] = cell;							
				c++;
			}
		}

		ws['!ref'] = XLSX.utils.encode_range(range);

		/* add worksheet to workbook */
		wb.SheetNames.push(ws_name);
		wb.Sheets[ws_name] = ws;

		/* write file */
		XLSX.writeFile(wb, '/Users/stuwilli/Projects/fw-cli/test.xlsx');