metadata
tags:
- summarization
widget:
- text: >-
function isStandardBrowserEnv ( ) { if ( typeof navigator !== 'undefined'
&& ( navigator . product === 'ReactNative' || navigator . product ===
'NativeScript' || navigator . product === 'NS' ) ) { return false ; }
return ( typeof window !== 'undefined' && typeof document !== 'undefined'
) ; }