redash/client/app/visualizations/chart/plotly/utils.js

import { isUndefined } from 'lodash';
import moment from 'moment';
import plotlyCleanNumber from 'plotly.js/src/lib/clean_number';

export function cleanNumber(value) {
  return isUndefined(value) ? value : plotlyCleanNumber(value);
}

export function getSeriesAxis(series, options) {
  const seriesOptions = options.seriesOptions[series.name] || { type: options.globalSeriesType };
  if ((seriesOptions.yAxis === 1) && (!options.series.stacking || (seriesOptions.type === 'line'))) {
    return 'y2';
  }
  return 'y';
}

export function normalizeValue(value, axisType, dateTimeFormat = 'YYYY-MM-DD HH:mm:ss') {
  if (axisType === 'datetime' && moment.utc(value).isValid()) {
    value = moment.utc(value);
  }
  if (moment.isMoment(value)) {
    return value.format(dateTimeFormat);
  }
  return value;
}