@koopjs/featureserver/src/helpers/is-geojson-table.js

*An open source implementation of the GeoServices specification*

const _ = require('lodash');
const getGeometryTypeFromGeojson = require('./get-geometry-type-from-geojson');

function hasValidFullExent(data) {
  // Check for a valid fullExtent. If unset, assume this is a Table
  const fullExtent = data.fullExtent || (data.metadata && data.metadata.fullExtent);
  if (
    _.isUndefined(fullExtent) ||
    _.isUndefined(fullExtent.xmin) ||
    _.isUndefined(fullExtent.ymin) ||
    fullExtent.xmin === Infinity
  )
    return true;

  return false;
}

module.exports = function isTable(data = {}) {
  // geometry indicates this in not a table
  const geometryType = getGeometryTypeFromGeojson(data);
  if (geometryType) return false;

  return hasValidFullExent(data);
};