Wavesurfer loading precomputed peaks is broken (at least for this test file) about wavesurfer.js HOT 2 CLOSED

  /** Get decoded peaks */
  public exportPeaks({ channels = 2, maxLength = 8000, precision = 10_000 } = {}): Array<number[]> {
    if (!this.decodedData) {
      throw new Error('The audio has not been decoded yet')
    }
    const maxChannels = Math.min(channels, this.decodedData.numberOfChannels)
    const peaks = []
    for (let i = 0; i < maxChannels; i++) {
      const channel = this.decodedData.getChannelData(i)
      const data = []
      const sampleSize = (channel.length / maxLength)
      for (let i = 0; i < maxLength; i++) {
        const sample = channel.slice(Math.floor(i * sampleSize), Math.ceil((i + 1) * sampleSize))
        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)
    }
    return peaks
  }