ignore parameter bindings in minification.deadCodeElimination transformer - fixes #1464

2015-05-07 01:58:54 +01:00 · 2015-05-07 01:58:54 +01:00 · 8ed90d3af2
commit 8ed90d3af2
parent 0bb311f8ce
1 changed files with 1 additions and 0 deletions
--- a/src/babel/transformation/transformers/minification/dead-code-elimination.js
+++ b/src/babel/transformation/transformers/minification/dead-code-elimination.js
@ -26,6 +26,7 @@ export function Identifier(node, parent, scope) {

  var binding = scope.getBinding(node.name);
  if (!binding || binding.references > 1 || !binding.constant) return;
+  if (binding.kind === "param") return;

  var replacement = binding.path.node;
  if (t.isVariableDeclarator(replacement)) {