printer.barcode(code : number, type : BarcodeType, options : BarcodeOptions);
to
printer.barcode(code : number | string, type : BarcodeType, options : BarcodeOptions);
The Code 39 specification defines 43 characters, consisting of uppercase letters (A through Z), numeric digits (0 through 9) and a number of special characters (-, ., $, /, +, %.
to
The Code 39 specification defines 43 characters, consisting of uppercase letters (A through Z), numeric digits (0 through 9) and a number of special characters (-, ., $, /, +, %.
@reference Wiki Code39