feat: Introduce custom charsPerLine property for enhanced ticket la… (

#198)

* feat: Introduce custom `charsPerLine` property for enhanced ticket layout flexibility

- Added `charsPerLine` option to the Printer API, allowing custom character width per line.
- Enhances layout control for complex ticket templates.
- Fixes issue #197: Proposal for custom `charsPerLine` for flexible layouts.

* - Cleaned up code formatting by removing an unnecessary space in the parameters list.
#197

* style: format code for ESLint best practices
#197

src/printer/printHelpers/addTextLine.ts

@@ -5,19 +5,22 @@ import { PrinterConstants, DEFAULT_PAPER_WIDTH } from '../constants';
 
 export async function addTextLine(
   printer: Printer,
-  params: SpaceBetweenParams
+  params: SpaceBetweenParams,
+  customCharsPerLine?: number
 ) {
   const printerCharsPerLinePerWidth = getFontACharsPerLine(printer.deviceName);
   const { value: paperWidth } = await printer.getPrinterSetting(
     PrinterConstants.PRINTER_SETTING_PAPERWIDTH
   );
 
-  const charsPerLine =
-    printerCharsPerLinePerWidth[paperWidth || DEFAULT_PAPER_WIDTH];
+  const charsPerLine = customCharsPerLine
+    ? customCharsPerLine
+    : printerCharsPerLinePerWidth[paperWidth || DEFAULT_PAPER_WIDTH];
 
   const text = spaceBetween(
     Math.ceil(charsPerLine / printer.currentFontWidth),
     params
   );
+
   await printer.addText(text);
 }