feature-detect for ES6 Map, Set, WeakMap and WeakSet #1396
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@jokeyrhyme somehow I missed this, do you wanna rebase off of master? |
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@patrickkettner all rebased and theoretically good to go :) |
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feature-detect for ES6 Map, Set, WeakMap and WeakSet
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you're a really cool dude, you know that? |
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@patrickkettner thanks, that's really life-affirming of you. :) I think that you are also a really cool dude. :) |
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This feature detect shows whether the new collections constructors for ES6 are supported: Map, Set, WeakMap and WeakSet.
Chrome implements all 4, but hides 2 behind a flag. Firefox implements 3.
Polymer requires WeakMap, so detecting this may allow us to skip loading the poly-fill in upcoming browsers.
Part of #1170.