Electron Epos Printer

This package provides a small printer service to make printing receipts a little easier.

The project itself is in its infancy, and has only a small amount of features these feature include:

• Adding headers
• Adding paragraphs of text
• Adding tables

Firstly you need to instantiate the class with the required configuration:

const printConfig = {
        preview: false, // Preview in window or print
        width: '200px', //  width of content body
        margins: {
            marginType: 'none',
        }, // margin of content body
        copies: 1, // Number of copies to print
        printerName: 'Your printer name', // printerName: string, check it at webContent.getPrinters()
        timeOutPerLine: 200,
        silent: true,
        pageSize: {
            height: 301000,
            width: 71000
        }
    };


    const printService = new PrintService(printConfig);
    
    printService.addHeader('Receipt', true)
        .addTable(
        	['Some', 'heading', 'row'],
            [
            	['row', 'one', 'entry'],
                ['row', 'two', 'entry'],
            ],
        )
        .addText('Total Order: $10.00')
		.addText('Thank you for your order');
    
    printService.print();
    

Print Config Structure

Config Item	Type	Description
preview	boolean	The default value is false, if set to true, a preview window will load and no printing will occur
width	string	The width in pixels of the printing
margins	object	and object containing the marginType
copies	number	The amount of copies you wish to print
printerName	string	This is the printer name. It must be the string representation of the printer name
timeOutPerLine	number	Default to 200 - the timeout per line
silent	boolean	If true, the printer config options will appear before printing
pageSize	object	An object containing the height and width of the page size

Compatibility

In testing, this only works on node version 14.17.3 (with npm 6.14.3) - there appears to be compiler issues on the current node version which needs investigating.

Contributing

Any contributions are welcome and if there are any features you wish to see added, please open an issue, and I will take a look at them.