From c8eac002e6de0ceadb0cc298e712fb71c2d782be Mon Sep 17 00:00:00 2001
From: Bronley Plumb <bronley@gmail.com>
Date: Wed, 4 Sep 2024 11:46:40 -0400
Subject: [PATCH] Add failing test. Haven't fixed issue yet.

---
 src/lexer/Lexer.spec.ts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/lexer/Lexer.spec.ts b/src/lexer/Lexer.spec.ts
index ee785fac8..c71c4e433 100644
--- a/src/lexer/Lexer.spec.ts
+++ b/src/lexer/Lexer.spec.ts
@@ -452,6 +452,23 @@ describe('lexer', () => {
     // template string literals
 
     describe('template string literals', () => {
+        it.only('handles nested curly braces', () => {
+            let tokens = Lexer.scan('thing = `${{}}`').tokens;
+            expect(tokens.map(x => x.kind)).to.eql([
+                TokenKind.Identifier,
+                TokenKind.Equal,
+                TokenKind.BackTick,
+                TokenKind.TemplateStringQuasi,
+                TokenKind.TemplateStringExpressionBegin,
+                TokenKind.LeftCurlyBrace,
+                TokenKind.RightCurlyBrace,
+                TokenKind.TemplateStringExpressionEnd,
+                TokenKind.TemplateStringQuasi,
+                TokenKind.BackTick,
+                TokenKind.Eof
+            ]);
+        });
+
         it('supports escaped chars', () => {
             let { tokens } = Lexer.scan('`\\n\\`\\r\\n`');
             expect(tokens.map(t => t.kind)).to.deep.equal([