jshint
diff --git a/‎src/jshint.js
Lines changed: 3 additions & 1 deletion b/‎src/jshint.js
Lines changed: 3 additions & 1 deletion
diff --git a/‎tests/unit/parser.js
Lines changed: 23 additions & 0 deletions b/‎tests/unit/parser.js
Lines changed: 23 additions & 0 deletions
@@ -2451,7 +2451,9 @@ var JSHINT = (function() {
     that.left = left;
     var right = that.right = expression(context, 39);
 
-    if (!right.paren && (right.id === "||" || right.id === "&&")) {
+    if (!right) {
+      error("E024", state.tokens.next, state.tokens.next.id);
+    } else if (!right.paren && (right.id === "||" || right.id === "&&")) {
       error("E024", that.right, that.right.id);
     }
 
 
@@ -10624,3 +10624,26 @@ exports.loneNew = function (test) {
 
   test.done();
 };
+
+// gh-3560: "Logical nullish assignment (??=) throwing error"
+exports.loneNullishCoalescing = function (test) {
+  TestRun(test, "as reported")
+    .addError(2, 8, "Expected an identifier and instead saw '='.")
+    .addError(2, 10, "Unexpected '(number)'.")
+    .addError(2, 8, "Expected an assignment or function call and instead saw an expression.")
+    .addError(2, 9, "Missing semicolon.")
+    .addError(2, 10, "Expected an assignment or function call and instead saw an expression.")
+    .test([
+      "let a = [1,2];",
+      "a[0] ??= 0;"
+    ], {esversion: 11});
+
+  TestRun(test, "simplified")
+    .addError(1, 4, "Expected an identifier and instead saw ';'.")
+    .addError(1, 4, "Unexpected '(end)'.")
+    .addError(1, 4, "Expected an assignment or function call and instead saw an expression.")
+    .addError(1, 5, "Missing semicolon.")
+    .test("0??;", {esversion: 11});
+
+  test.done();
+};
Original file line number	Diff line number	Diff line change
`@@ -2451,7 +2451,9 @@ var JSHINT = (function() {`
`2451`	`2451`	`that.left = left;`
`2452`	`2452`	`var right = that.right = expression(context, 39);`
`2453`	`2453`
`2454`		`- if (!right.paren && (right.id === "\|\|" \|\| right.id === "&&")) {`
	`2454`	`+ if (!right) {`
	`2455`	`+ error("E024", state.tokens.next, state.tokens.next.id);`
	`2456`	`+ } else if (!right.paren && (right.id === "\|\|" \|\| right.id === "&&")) {`
`2455`	`2457`	`error("E024", that.right, that.right.id);`
`2456`	`2458`	`}`
`2457`	`2459`