Add missing scopes when adding reference to scope tracker

Fixes "Cannot read property 'add' of undefined" error. babel#792 babel#556
devongovett · May 20, 2018 · 33e84a8 · 33e84a8
1 parent 01eac1c
commit 33e84a8
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/packages/babel-plugin-minify-mangle-names/src/scope-tracker.js b/packages/babel-plugin-minify-mangle-names/src/scope-tracker.js
@@ -39,6 +39,7 @@ module.exports = class ScopeTracker {
  addReference(scope, binding, name) {
  let parent = scope;
  do {
+ this.addScope(parent);
  this.references.get(parent).add(name);
  if (!binding) {
  throw new Error(