export function validateGeohash()

in packages/geofire-common/src/index.ts [103:121]

• 17 lines of code
• 6 McCabe index (conditional complexity)

export function validateGeohash(geohash: Geohash): void {
  let error;

  if (typeof geohash !== 'string') {
    error = 'geohash must be a string';
  } else if (geohash.length === 0) {
    error = 'geohash cannot be the empty string';
  } else {
    for (const letter of geohash) {
      if (BASE32.indexOf(letter) === -1) {
        error = 'geohash cannot contain \'' + letter + '\'';
      }
    }
  }

  if (typeof error !== 'undefined') {
    throw new Error('Invalid GeoFire geohash \'' + geohash + '\': ' + error);
  }
}