Timemap: Find measure duration

[infojunkie]

I'm using the timemap feature to map measures to their timestamps and enable audio playback of the score. My rendering of the cursor would benefit from knowing the measure duration. Is there a way to compute that, preferably in milliseconds? I am aware that a measure ends when the next one starts, but how to compute the duration of the last measure?

[infojunkie]

For what it's worth, I ended up using the largest tstamp to represent the end of the last measure, like so:

    let tstamp = 0;
    this._vrv.renderToTimemap({ includeMeasures: true, includeRests: true }).forEach((event) => {
      // If starting a measure, add it to the timemap.
      if ('measureOn' in event) {
        const i = this._timemap.length;
        if (i > 0) {
          this._timemap[i - 1].duration =
            event.tstamp - this._timemap[i - 1].timestamp;
        }
        this._timemap.push({
          measure: i,
          timestamp: event.tstamp,
          duration: 0,
        });
      }

      // Find the duration of the last measure.
      // Calculate the max tstamp and compute the last measure duration based on that.
      tstamp = Math.max(tstamp, event.tstamp);
    });
    this._timemap[this._timemap.length - 1].duration =
      tstamp - this._timemap[this._timemap.length - 1].timestamp;