[Refactor] remove unnecessary condition

j-f1 · j-f1 · commit 91906ba22438 · 2018-12-08T07:37:51.000-05:00
`canHaveTrailingComma` is defined as `I(lastElem &amp;&amp; ...)`, which will always be true when `lastElem === null`.
diff --git a/src/language-js/printer-estree.js b/src/language-js/printer-estree.js
@@ -1518,8 +1518,7 @@ function printPathNoParens(path, options, print, args) {
         //
         // Note that getLast returns null if the array is empty, but
         // we already check for an empty array just above so we are safe
-        const needsForcedTrailingComma =
-          canHaveTrailingComma && lastElem === null;
+        const needsForcedTrailingComma = lastElem === null;
 
         parts.push(
           group(
