From 516bc1244c6cb52faf4dcb43bec0439e8c098b5f Mon Sep 17 00:00:00 2001
From: Marijn Haverbeke <marijn@haverbeke.nl>
Date: Mon, 1 Aug 2022 15:39:18 +0200
Subject: [PATCH] [loose parser] Clear containsEsc flag when resetting
 tokenizer

FIX: Fix a bug where the parser would raise an error when an invalid
escape was included in an identifier after a keyword.

Closes https://github.com/acornjs/acorn/issues/1139
---
 acorn-loose/src/tokenize.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/acorn-loose/src/tokenize.js b/acorn-loose/src/tokenize.js
index b3bd03d54..32041f9da 100644
--- a/acorn-loose/src/tokenize.js
+++ b/acorn-loose/src/tokenize.js
@@ -89,6 +89,7 @@ lp.readToken = function() {
 
 lp.resetTo = function(pos) {
   this.toks.pos = pos
+  this.toks.containsEsc = false
   let ch = this.input.charAt(pos - 1)
   this.toks.exprAllowed = !ch || /[[{(,;:?/*=+\-~!|&%^<>]/.test(ch) ||
     /[enwfd]/.test(ch) &&