Avoid another stack overflow with certain input

tailwindlabs · Mar 27, 2021 · 5b366f2 · 5b366f2
1 parent 5d75fbc
commit 5b366f2
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Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/src/lib/generateRules.js b/src/lib/generateRules.js
@@ -23,7 +23,7 @@ function* candidatePermutations(candidate, lastIndex = Infinity) {
 
   let dashIdx
 
-  if (candidate.endsWith(']', lastIndex + 1)) {
+  if (lastIndex === Infinity && candidate.endsWith(']')) {
     let bracketIdx = candidate.lastIndexOf('[')
 
     // If character before `[` isn't a dash, this isn't a dynamic class

diff --git a/tests/00-kitchen-sink.test.html b/tests/00-kitchen-sink.test.html
@@ -65,6 +65,8 @@
     },
     setup: () => {
       const count = ref(0)
+      // Weird regex-looking stuff that once caused a stack overflow in candidatePermutations
+      const pattern = ' ]-[] '
       return {
         count,
         stuff: [] /* string[] | undefined */,