https://blog.michal.pawlik.dev/tags/flashlight/ Recent content in Flashlight on Dev notes Hugo en-us Wed, 08 Feb 2023 00:00:00 +0000 https://blog.michal.pawlik.dev/posts/til/flashlight-using-typescript/ Wed, 08 Feb 2023 00:00:00 +0000 https://blog.michal.pawlik.dev/posts/til/flashlight-using-typescript/ <p><strong>TL;DR</strong> I wanted to launch a flashlight on Android device using Typescript and the experience was <em>far from ideal</em>.</p> <h1 id="the-task">The task</h1> <p>Background: there&rsquo;s a web application that runs a camera to scan for QR codes. Sometimes the light conditions are poor and scanning is difficult.</p> <p>The task: Launch the flashlight to improve the scanning experience.</p> <p>Doesn&rsquo;t sound that difficult, does it?</p> <h1 id="meet-the-camera-api">Meet the camera API</h1> <p>So we want to obtain the camera stream, how do we do that? It seems the answer is simple. Meet the <a href="https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia">MediaDevices.getUserMedia()</a></p>