fix(text-chunk): Fix infinite loop checking

packages/tts-cli/lib/text-chunk.js

@@ -16,6 +16,7 @@ const splitIntoSentences = (text) => {
  */
 const chunkText = (text, maxLength) => {
   const sentences = splitIntoSentences(text)
+  const epsilon = 100
 
   // Loop through the sentences, putting them into chunks.
   const chunks = []
@@ -45,7 +46,7 @@ const chunkText = (text, maxLength) => {
           j++
         }
         safety3++
-        if (safety3 > 100) { throw new Error('Infinite loop') }
+        if (safety3 > words.length + epsilon) { throw new Error('Infinite loop') }
       }
 
       // If there is an unfilled chunk remaining, add it to the list.
@@ -64,12 +65,12 @@ const chunkText = (text, maxLength) => {
         chunk += newChunk
         i++
         safety2++
-        if (safety2 > 100) { throw new Error('Infinite loop') }
+        if (safety2 > sentences.length + epsilon) { throw new Error('Infinite loop') }
       }
       chunks.push(chunk)
     }
     safety++
-    if (safety > 100) { throw new Error('Infinite loop') }
+    if (safety > sentences.length + epsilon) { throw new Error('Infinite loop') }
   }
 
   return chunks

packages/tts-cli/test/text-chunk.spec.js

@@ -71,6 +71,13 @@ describe('chunkText()', () => {
       'people, for the people, shall not perish from the earth.'
     ])
   })
+
+  it('should work for long texts', () => {
+    const text = new Array(200).fill(0).map(_ => 'This is a sentence.').join(' ')
+    expect(() => {
+      chunkText(text, 20)
+    }).not.toThrow()
+  })
 })
 
 describe('splitIntoSentences()', () => {