Fix: negative values in exportPeaks

Author: katspaugh

src/wavesurfer.ts

@@ -404,7 +404,11 @@ class WaveSurfer extends Player<WaveSurferEvents> {
       const sampleSize = Math.round(channel.length / maxLength)
       for (let i = 0; i < maxLength; i++) {
         const sample = channel.slice(i * sampleSize, (i + 1) * sampleSize)
-        const max = Math.max(...sample)
+        let max = 0
+        for (let x = 0; x < sample.length; x++) {
+          const n = sample[x]
+          if (Math.abs(n) > Math.abs(max)) max = n
+        }
         data.push(Math.round(max * precision) / precision)
       }
       peaks.push(data)

src/webaudio.ts

@@ -100,14 +100,18 @@ class WebAudioPlayer extends EventEmitter<WebAudioPlayerEvents> {
     this.emit('pause')
   }
 
- stopAt(timeSeconds: number) {
+  stopAt(timeSeconds: number) {
     const delay = timeSeconds - this.currentTime
     this.bufferNode?.stop(this.audioContext.currentTime + delay)
-  
-    this.bufferNode?.addEventListener('ended', () => {
-      this.bufferNode = null
-      this.pause()
-    }, { once: true })
+
+    this.bufferNode?.addEventListener(
+      'ended',
+      () => {
+        this.bufferNode = null
+        this.pause()
+      },
+      { once: true },
+    )
   }
 
   async setSinkId(deviceId: string) {