From bae1f0e9fc24375d37b83cd0ced3f84a862e9be9 Mon Sep 17 00:00:00 2001
From: Sven Slootweg <admin@cryto.net>
Date: Wed, 1 Jul 2020 15:50:15 +0200
Subject: [PATCH] Don't attempt to generate function description when the
 location of a stacktrace frame could not be determined

---
 src/aggregrate-errors.js | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/aggregrate-errors.js b/src/aggregrate-errors.js
index 6c26b8e..2527e8d 100644
--- a/src/aggregrate-errors.js
+++ b/src/aggregrate-errors.js
@@ -142,13 +142,17 @@ module.exports = function aggregrateAndThrowErrors(errors) {
 		let detailLines = renderErrorList(errors);	
 		let frame = determineLocation();
 
-		let functionString = (frame.alias != null)
-			? `${frame.alias} [${frame.functionName}]`
-			: frame.functionName;
+		let locationString = asExpression(() => {
+			if (frame != null) {
+				let functionString = (frame.alias != null)
+					? `${frame.alias} [${frame.functionName}]`
+					: frame.functionName;
 
-		let locationString = (frame != null)
-			? `${highlightBold(functionString)} in ${highlightBold(frame.shortPath)}, at line ${highlightBold(frame.location.line)} (${frame.location.path})`
-			: dimBold(`(could not determine location)`);
+				return `${highlightBold(functionString)} in ${highlightBold(frame.shortPath)}, at line ${highlightBold(frame.location.line)} (${frame.location.path})`;
+			} else {
+				return dimBold(`(could not determine location)`);
+			}
+		});
 
 		return new AggregrateValidationError(`One or more validation errors occurred at ${locationString}:\n${detailLines}`, {
 			errors: errors