prometheus/web/ui/react-app/src/MetricFormat.ts

function metricToSeriesName(labels: { [key: string]: string }): string {
  if (labels === null) {
    return 'scalar';
  }
  let tsName = (labels.__name__ || '') + '{';
  const labelStrings: string[] = [];
  for (const label in labels) {
    if (label !== '__name__') {
      labelStrings.push(label + '="' + labels[label] + '"');
    }
  }
  tsName += labelStrings.join(', ') + '}';
  return tsName;
}

export default metricToSeriesName;