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import {keys} from './util';
/** * Data type based on level of measurement */export const Type = {  quantitative: 'quantitative',  ordinal: 'ordinal',  temporal: 'temporal',  nominal: 'nominal',  geojson: 'geojson'} as const;
export type Type = keyof typeof Type;
export function isType(t: any): t is Type {  return t in Type;}
export const QUANTITATIVE = Type.quantitative;export const ORDINAL = Type.ordinal;export const TEMPORAL = Type.temporal;export const NOMINAL = Type.nominal;
export const GEOJSON = Type.geojson;
export type StandardType = 'quantitative' | 'ordinal' | 'temporal' | 'nominal';
export const TYPES = keys(Type);
/** * Get full, lowercase type name for a given type. * @param  type * @return Full type name. */export function getFullName(type: Type | string): Type | undefined {  if (type) {    type = type.toLowerCase();    switch (type) {      case 'q':      case QUANTITATIVE:        return 'quantitative';      case 't':      case TEMPORAL:        return 'temporal';      case 'o':      case ORDINAL:        return 'ordinal';      case 'n':      case NOMINAL:        return 'nominal';      case GEOJSON:        return 'geojson';    }  }  // If we get invalid input, return undefined type.  return undefined;}