From 5ba02c71c9398a58ce837011e3a25163d229687a Mon Sep 17 00:00:00 2001
From: John Factotum <50942278+johnfactotum@users.noreply.github.com>
Date: Thu, 9 Apr 2026 05:10:21 +0800
Subject: [PATCH] TTS: fix error & nodes getting skipped

Fixes #115
---
 text-walker.js |  2 +-
 tts.js         | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/text-walker.js b/text-walker.js
index 4ff9dff..c1249b7 100644
--- a/text-walker.js
+++ b/text-walker.js
@@ -32,7 +32,7 @@ export const textWalker = function* (x, func, filterFunc) {
     const walker = document.createTreeWalker(root, filter, { acceptNode: filterFunc || acceptNode })
     const walk = x.commonAncestorContainer ? walkRange : walkDocument
     const nodes = walk(x, walker)
-    const strs = nodes.map(node => node.nodeValue)
+    const strs = nodes.map(node => node.nodeValue ?? '')
     const makeRange = (startIndex, startOffset, endIndex, endOffset) => {
         const range = document.createRange()
         range.setStart(nodes[startIndex], startOffset)
diff --git a/tts.js b/tts.js
index dee3c57..bf665c5 100644
--- a/tts.js
+++ b/tts.js
@@ -53,7 +53,7 @@ const fragmentToSSML = (fragment, inherited) => {
         if (!node) return
         if (node.nodeType === 3) return ssml.createTextNode(node.textContent)
         if (node.nodeType === 4) return ssml.createCDATASection(node.textContent)
-        if (node.nodeType !== 1) return
+        if (node.nodeType !== 1 && node.nodeType !== 11) return
 
         let el
         const nodeName = node.nodeName.toLowerCase()
@@ -66,15 +66,15 @@ const fragmentToSSML = (fragment, inherited) => {
         else if (nodeName === 'em' || nodeName === 'strong')
             el = ssml.createElementNS(NS.SSML, 'emphasis')
 
-        const lang = node.lang || node.getAttributeNS(NS.XML, 'lang')
+        const lang = node.lang || node.getAttributeNS?.(NS.XML, 'lang')
         if (lang) {
             if (!el) el = ssml.createElementNS(NS.SSML, 'lang')
             el.setAttributeNS(NS.XML, 'lang', lang)
         }
 
-        const alphabet = node.getAttributeNS(NS.SSML, 'alphabet') || inheritedAlphabet
+        const alphabet = node.getAttributeNS?.(NS.SSML, 'alphabet') || inheritedAlphabet
         if (!el) {
-            const ph = node.getAttributeNS(NS.SSML, 'ph')
+            const ph = node.getAttributeNS?.(NS.SSML, 'ph')
             if (ph) {
                 el = ssml.createElementNS(NS.SSML, 'phoneme')
                 if (alphabet) el.setAttribute('alphabet', alphabet)
@@ -92,7 +92,7 @@ const fragmentToSSML = (fragment, inherited) => {
         }
         return el
     }
-    convert(fragment.firstChild, ssml.documentElement, inherited.alphabet)
+    convert(fragment, ssml.documentElement, inherited.alphabet)
     return ssml
 }