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Adds a polyfill for the Symbol
class and Array.from()
as recommended by babel. Some babel transforms (array spread, array destructuring, for..of
, etc) rely on these features behind the scenes and will break in some browsers when they are not available.
The Airbnb style guide mandates the use of some of these methods, so I think it's a good idea to have them available:
All tests should pass. I added an example of array destructuring within diff.js
which will fail without the polyfill. There are other examples already in our codebase which won't work in IE, but for one reason or another do not cause any test failures. This should fix those as well.
master
(if it does - rebase it please)Closes #25188 (closed), #24922 (closed)