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polyfill-service

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A polyfill combinator

github.com/financial-times/polyfill-service

financial-times/polyfill-service

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/* Picturefill does not set the HTMLPictureElement global, and the srcset property of <source> does not appear to be accessible to JS in IE8, so in IE8 the only way to detect that the polyfill has applied is to use a non-standard global exposed by the polyfill */ 'HTMLPictureElement' in this || 'picturefill' in this