From 9eca3a8ea012e2c9bd87141799dc4caba0403cfc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mart=C3=ADn=20Rosselot?= <martin.rosselot@uc.cl>
Date: Sat, 19 Jul 2025 13:49:58 -0400
Subject: [PATCH] fix: preserve leading whitespace in PDF output using nbsp

---
 packages/xl-pdf-exporter/src/pdf/__snapshots__/example.jsx  | 2 +-
 .../src/pdf/__snapshots__/exampleWithHeaderAndFooter.jsx    | 2 +-
 packages/xl-pdf-exporter/src/pdf/pdfExporter.tsx            | 6 +++++-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/packages/xl-pdf-exporter/src/pdf/__snapshots__/example.jsx b/packages/xl-pdf-exporter/src/pdf/__snapshots__/example.jsx
index a9b3f7ef6..a1e59ffdf 100644
--- a/packages/xl-pdf-exporter/src/pdf/__snapshots__/example.jsx
+++ b/packages/xl-pdf-exporter/src/pdf/__snapshots__/example.jsx
@@ -869,7 +869,7 @@
             Styled Text
           </TEXT>
           <TEXT style={{}}>
-            {' '}
+             
           </TEXT>
           <LINK href="https://www.blocknotejs.org">
             <TEXT style={{}}>
diff --git a/packages/xl-pdf-exporter/src/pdf/__snapshots__/exampleWithHeaderAndFooter.jsx b/packages/xl-pdf-exporter/src/pdf/__snapshots__/exampleWithHeaderAndFooter.jsx
index 89d1d756e..3a4647eb8 100644
--- a/packages/xl-pdf-exporter/src/pdf/__snapshots__/exampleWithHeaderAndFooter.jsx
+++ b/packages/xl-pdf-exporter/src/pdf/__snapshots__/exampleWithHeaderAndFooter.jsx
@@ -877,7 +877,7 @@
             Styled Text
           </TEXT>
           <TEXT style={{}}>
-            {' '}
+             
           </TEXT>
           <LINK href="https://www.blocknotejs.org">
             <TEXT style={{}}>
diff --git a/packages/xl-pdf-exporter/src/pdf/pdfExporter.tsx b/packages/xl-pdf-exporter/src/pdf/pdfExporter.tsx
index 50ea545e3..64504f808 100644
--- a/packages/xl-pdf-exporter/src/pdf/pdfExporter.tsx
+++ b/packages/xl-pdf-exporter/src/pdf/pdfExporter.tsx
@@ -118,9 +118,13 @@ export class PDFExporter<
   public transformStyledText(styledText: StyledText<S>) {
     const stylesArray = this.mapStyles(styledText.styles);
     const styles = Object.assign({}, ...stylesArray);
+    const textWithLeadingNbsp = styledText.text.replace(
+      /(^|\n) +/g,
+      (leadingWhiteSpaces) => leadingWhiteSpaces.replace(/ /g, "\u00A0"),
+    );
     return (
       <Text style={styles} key={styledText.text}>
-        {styledText.text}
+        {textWithLeadingNbsp}
       </Text>
     );
   }