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better faq answer

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Sebastian McKenzie 2015-01-06 22:27:41 +11:00
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## Why are there `Array.from` and `Object.assign` calls in my code?! These functions don't exist!
This is a known [/docs/caveats](). This is because 6to5 compiles to ES3 syntax but with ES5 and ES6 methods. I know, I know, this might not make much sense, but this is essential to emulate a complete ES6 environment so your code wont break!
This is a known [caveat](/docs/caveats). This is because 6to5 compiles to ES3 syntax but with
ES5 and ES6 methods. This is essential to emulate a complete ES6 environment so your code
wont break! You see, ES6 features such as [iterators](/docs/tour#iterators) and
[symbols](/docs/tour#symbols) require a lot of logic to work, and to accurately support these
it would mean **a lot** of boilerplate smoshed into your codebase. This is the approach taken
by other transpilers but 6to5 approaches it pretty differently.
You have two options, depending on your use-case: