src/nodes/strings.js in prettier-1.0.0.pre.rc2 vs src/nodes/strings.js in prettier-1.0.0

@@ -30,10 +30,10 @@
 }
 
 const quotePattern = new RegExp("\\\\([\\s\\S])|(['\"])", "g");
 
 function normalizeQuotes(content, enclosingQuote, originalQuote) {
-  const replaceOther = ["'", '"'].includes(originalQuote);
+  const replaceOther = originalQuote === '"';
   const otherQuote = enclosingQuote === '"' ? "'" : '"';
 
   // Escape and unescape single and double quotes as needed to be able to
   // enclose `content` with `enclosingQuote`.
   return content.replace(quotePattern, (match, escaped, quote) => {