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polyfill-service
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A polyfill combinator
github.com/financial-times/polyfill-service
financial-times/polyfill-service
polyfill-service
/
polyfills
/
UserTiming
/
detect.js
2 lines
(1 loc)
•
129 B
JavaScript
View Raw
1
2
'performance'
in
this
&& typeof
this
.performance.getEntriesByType ===
'function'
&& typeof
this
.performance.mark ===
'function'