useIsMobile.ts.html 7.2 KB

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  106. <span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js"><span class="cstat-no" title="statement not covered" >import { useState, useEffect } from 'react';<span class="fstat-no" title="function not covered" ><span class="branch-0 cbranch-no" title="branch not covered" ></span></span></span>
  107. &nbsp;
  108. <span class="cstat-no" title="statement not covered" >const MOBILE_BREAKPOINT = 768; // md breakpoint</span>
  109. &nbsp;
  110. <span class="cstat-no" title="statement not covered" >export function useIsMobile(): boolean {</span>
  111. <span class="cstat-no" title="statement not covered" > const [isMobile, setIsMobile] = useState(() =&gt;</span>
  112. <span class="cstat-no" title="statement not covered" > typeof window !== 'undefined' ? window.innerWidth &lt; MOBILE_BREAKPOINT : false</span>
  113. <span class="cstat-no" title="statement not covered" > );</span>
  114. &nbsp;
  115. <span class="cstat-no" title="statement not covered" > useEffect(() =&gt; {</span>
  116. <span class="cstat-no" title="statement not covered" > const mediaQuery = window.matchMedia(`(max-width: ${MOBILE_BREAKPOINT - 1}px)`);</span>
  117. &nbsp;
  118. <span class="cstat-no" title="statement not covered" > const handleChange = (e: MediaQueryListEvent) =&gt; {</span>
  119. <span class="cstat-no" title="statement not covered" > setIsMobile(e.matches);</span>
  120. <span class="cstat-no" title="statement not covered" > };</span>
  121. &nbsp;
  122. // Set initial value
  123. <span class="cstat-no" title="statement not covered" > setIsMobile(mediaQuery.matches);</span>
  124. &nbsp;
  125. // Modern browsers support addEventListener
  126. <span class="cstat-no" title="statement not covered" > mediaQuery.addEventListener('change', handleChange);</span>
  127. <span class="cstat-no" title="statement not covered" > return () =&gt; mediaQuery.removeEventListener('change', handleChange);</span>
  128. <span class="cstat-no" title="statement not covered" > }, []);</span>
  129. &nbsp;
  130. <span class="cstat-no" title="statement not covered" > return isMobile;</span>
  131. <span class="cstat-no" title="statement not covered" >}</span>
  132. &nbsp;</pre></td></tr></table></pre>
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  136. Code coverage generated by
  137. <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a>
  138. at 2025-12-11T08:38:30.022Z
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