Function getKeys

modules/json/src/utils/get.ts:39–51

(compositeKey: string)

// - 'feature.geometry.type' => ['feature', 'geometry', 'type']
// - 'feature' => ['feature']
function getKeys(compositeKey: string): string[] {
  if (typeof compositeKey === 'string') {
    // else assume string and split around dots
    let keyList = keyMap[compositeKey];
    if (!keyList) {
      keyList = compositeKey.split('.');
      keyMap[compositeKey] = keyList;
    }
    return keyList;
  }
  // Wrap in array if needed
  return Array.isArray(compositeKey) ? compositeKey : [compositeKey];
}