Fix syntax error indicator in editor for generators.

Author: BigJk

frontend/src/js/core/generator.js

@@ -22,12 +22,21 @@ const rngScript = (seed) => `
 			window.dice = new rpgDiceRoller.DiceRoller();
 		</script>
 `;
+const rngScriptLines = rngScript(0).split('\n').length - 1;
 
 export function render(generator, entries, config) {
-	return renderTemplate(
-		(generator.passEntriesToJS ? `<script> let entries = ${JSON.stringify(entries)};</script>` : '') +
-			rngScript(config.seed ?? 'test-seed') +
-			generator.printTemplate,
-		{ config: config, images: generator.images, entries: entries }
-	);
+	return new Promise((resolve, reject) => {
+		renderTemplate(
+			(generator.passEntriesToJS ? `<script> let entries = ${JSON.stringify(entries)};</script>` : '') +
+				rngScript(config.seed ?? 'test-seed') +
+				generator.printTemplate,
+			{ config: config, images: generator.images, entries: entries }
+		)
+			.then(resolve)
+			.catch((err) => {
+				// fix the error line number by removing the rngScript lines from it.
+				err.line -= rngScriptLines;
+				reject(err);
+			});
+	});
 }

frontend/src/js/core/templating.js

@@ -49,7 +49,7 @@ export const parseError = (e) => {
 	if (match) {
 		return {
 			line: parseInt(match[1]),
-			column: parseInt(match[2]),
+			column: parseInt(match[2]) + 1,
 			error: match[3],
 		};
 	}