Add image drawing

src/dominiontext.ts

@@ -235,13 +235,13 @@ export const measureDominionText = async (
 			}
 			line.width = line.pieces
 				.map((piece) => piece.measure.width)
-				.reduce((a, b) => a + b);
+				.reduce((a, b) => a + b, 0);
 			return line;
 		}),
 		width: Math.max(...lines.map((line) => line.width)),
 		height: lines
 			.map((line) => line.ascent + line.descent)
-			.reduce((a, b) => a + b),
+			.reduce((a, b) => a + b, 0),
 	};
 };