From 3e5cffba0fb0bbbe2c62216463dcd295b7772311 Mon Sep 17 00:00:00 2001
From: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Date: Wed, 27 Oct 2021 16:08:44 +0200
Subject: [PATCH] fix: throw better error when JS parse fails

This should help debugging challenges with invalid syntax.
---
 curriculum/test/utils/extract-js-comments.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/curriculum/test/utils/extract-js-comments.js b/curriculum/test/utils/extract-js-comments.js
index b0dd7a6738..75ee28f047 100644
--- a/curriculum/test/utils/extract-js-comments.js
+++ b/curriculum/test/utils/extract-js-comments.js
@@ -6,8 +6,14 @@ const parser = acorn.Parser;
 function extractComments(js) {
   let comments = [];
   const file = { data: {} };
-  parser.parse(js, { onComment: comments, ecmaVersion: 2020 });
+  try {
+    parser.parse(js, { onComment: comments, ecmaVersion: 2020 });
+  } catch {
+    throw Error(`extract-js-comments could not parse the code below, this challenge have invalid syntax:
 
+${js}
+`);
+  }
   comments
     .map(({ value }) => value.trim())
     .forEach(comment => commentToData(file, comment));