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Fix tail call optimizations code #121

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Fix tail call optimizations code #121

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3 changes: 2 additions & 1 deletion README.md
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Expand Up @@ -598,8 +598,9 @@ More info: [MDN Reflect](https://developer.mozilla.org/en-US/docs/Web/JavaScript
Calls in tail-position are guaranteed to not grow the stack unboundedly. Makes recursive algorithms safe in the face of unbounded inputs.

```JavaScript
function factorial(n, acc = 1) {
function factorial(n, acc) {
'use strict';
if (acc == null) acc = 1;
if (n <= 1) return acc;
return factorial(n - 1, n * acc);
}
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