Improve a “match” error message

2026-05-02 03:01:46 -04:00 · 2015-01-07 17:50:37 -08:00
parent 0daffe9bd8
commit b1995fce13
1 changed files with 2 additions and 2 deletions
--- a/packages/check/match.js
+++ b/packages/check/match.js
@@ -249,8 +249,8 @@ var checkSubtree = function (value, pattern) {
  if (pattern instanceof Function) {
    if (value instanceof pattern)
      return;
-    // XXX what if .name isn't defined
-    throw new Match.Error("Expected " + pattern.name);
+    throw new Match.Error("Expected " + (pattern.name ||
+                                         "particular constructor"));
  }

  var unknownKeysAllowed = false;