:( I was looking forward to tail calls.<p>As far as I can see WebKit&#x2F;Safari is the only major browser that has an implementation: <a href="https:&#x2F;&#x2F;kangax.github.io&#x2F;compat-table&#x2F;es6&#x2F;#test-proper_tail_calls_(tail_call_optimisation)" rel="nofollow">https:&#x2F;&#x2F;kangax.github.io&#x2F;compat-table&#x2F;es6&#x2F;#test-proper_tail_...</a>