Handle private access chained on an optional chain

alangpierce · Oct 4, 2020 · a72e684 · a72e684
1 parent 4c53842
commit a72e684
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/src/parser/traverser/expression.ts b/src/parser/traverser/expression.ts
@@ -328,7 +328,7 @@ export function baseParseSubscript(
     } else if (eat(tt.parenL)) {
       parseCallExpressionArguments();
     } else {
-      parseIdentifier();
+      parseMaybePrivateName();
     }
   } else if (eat(tt.dot)) {
     state.tokens[state.tokens.length - 1].subscriptStartIndex = startTokenIndex;

diff --git a/test/tokens-test.ts b/test/tokens-test.ts
@@ -327,6 +327,7 @@ describe("tokens", () => {
         #x = 3
       }
       this.#x = 3
+      delete this?.#x
       if (#x in obj) { }
     `,
       [
@@ -345,6 +346,12 @@ describe("tokens", () => {
         {type: tt.eq},
         {type: tt.num},
 
+        {type: tt._delete},
+        {type: tt._this},
+        {type: tt.questionDot},
+        {type: tt.hash},
+        {type: tt.name},
+
         {type: tt._if},
         {type: tt.parenL},
         {type: tt.hash},