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Starter#Functions#Polyfill
Function.prototype.bind Polyfill
Implement Function.prototype.bind from scratch, including partial application and the new-operator edge case that almost nobody gets right.
By modernDev2026-06-05Hard
bind is the hardest of the three function prototype methods. It returns a new function with this permanently fixed — but that binding must be ignored if the bound function is later called with new. The new instance must become this, and the prototype chain must still work so instanceof checks pass.
Goal: Implement myBind with partial application. Bonus: handle the `new` operator case.
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