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import debug from './debug';
/**
* Whether Do Not Track is enabled in the user's browser.
* @returns true if Do Not Track is enabled in the user's browser.
*/
export default function getDoNotTrack(): boolean {
const result = Boolean(
typeof window !== 'undefined' &&
// Internet Explorer 11 uses window.doNotTrack rather than navigator.doNotTrack.
// Safari 7.1.3+ uses window.doNotTrack rather than navigator.doNotTrack.
// MDN ref: https://developer.mozilla.org/en-US/docs/Web/API/navigator/doNotTrack#Browser_compatibility
( window.doNotTrack === '1' || ( window.navigator && window.navigator.doNotTrack === '1' ) )
);
debug( `Do Not Track: ${ result }` );
return result;
}
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