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sub2api/frontend/src/utils/device.ts

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/**
* Detect whether the current device is mobile.
* Uses navigator.userAgentData (modern API) with UA regex fallback.
*/
export function isMobileDevice(): boolean {
const nav = navigator as unknown as Record<string, unknown>
if (nav.userAgentData && typeof (nav.userAgentData as Record<string, unknown>).mobile === 'boolean') {
return (nav.userAgentData as Record<string, unknown>).mobile as boolean
}
return /Android|iPhone|iPad|iPod|Mobile/i.test(navigator.userAgent)
}