Fix

prettier · Dec 22, 2022 · fc729c8 · fc729c8
1 parent 09e48a5
commit fc729c8
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Showing 3 changed files with 11 additions and 3 deletions.
diff --git a/src/language-js/needs-parens.js b/src/language-js/needs-parens.js
@@ -79,10 +79,9 @@ function needsParens(path, options) {
 
     // `for ((let.a) of []);`
     if (name === "object" && node.name === "let") {
-      const statement = path.findAncestor(
+      const expression = path.findAncestor(
         (node) => node.type === "ForOfStatement"
-      );
-      const expression = statement.left;
+      )?.left
       if (
         expression &&
         startsWithNoLookaheadToken(

diff --git a/tests/format/js/identifier/for-of/__snapshots__/jsfmt.spec.js.snap b/tests/format/js/identifier/for-of/__snapshots__/jsfmt.spec.js.snap
@@ -37,6 +37,9 @@ for (foo of let[a]);
 for ((let.a) of foo);
 for ((let[a]) of foo);
 
+for ((let.a) in foo);
+for ((let[a]) in foo);
+
 =====================================output=====================================
 for ((let) of foo);
 for (foo of let);
@@ -45,5 +48,8 @@ for (foo of let[a]);
 for ((let).a of foo);
 for ((let)[a] of foo);
 
+for (let.a in foo);
+for ((let)[a] in foo);
+
 ================================================================================
 `;
diff --git a/tests/format/js/identifier/for-of/let.js b/tests/format/js/identifier/for-of/let.js
@@ -4,3 +4,6 @@ for (foo of let.a);
 for (foo of let[a]);
 for ((let.a) of foo);
 for ((let[a]) of foo);
+
+for ((let.a) in foo);
+for ((let[a]) in foo);