babel/packages/babel-plugin-transform-optional-chaining/test/fixtures/general/assignement/expected.js

var _temp;

if (((_temp = a) != null ? _temp.b : undefined) != undefined) {
  a.b = 42;
}

if (((_temp = a.b.c) != null ? _temp.d : undefined) != undefined) {
  a.b.c.d = 42;
}