nicer unknown transformer message

2015-01-21 23:33:30 +11:00
parent 0ab4326026
commit ac891bebaa
2 changed files with 7 additions and 2 deletions
--- a/lib/6to5/transformation/transform.js
+++ b/lib/6to5/transformation/transform.js
@@ -25,7 +25,12 @@ transform._ensureTransformerNames = function (type, keys) {
  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    if (!_.has(transform.transformers, key)) {
-      throw new ReferenceError("unknown transformer " + key + " specified in " + type);
+      throw new ReferenceError(
+        "Unknown transformer " + key + " specified in " + type + " - " +
+        "transformer key names have been changed in 3.0.0 see " +
+        "the changelog for more info " +
+        "https://github.com/6to5/6to5/blob/master/CHANGELOG.md#300"
+      );
    }
  }
 };