_populateRecord()

in packages/relay-runtime/store/RelayExperimentalGraphResponseHandler.js [78:111]

• 32 lines of code
• 11 McCabe index (conditional complexity)

  _populateRecord(parentRecord: Record, chunk: DataChunk) {
    for (const [key, value] of Object.entries(chunk)) {
      switch (key) {
        case '$streamID':
        case '$kind':
        case '__typename':
          break;
        default:
          if (
            typeof value !== 'object' ||
            value == null ||
            Array.isArray(value)
          ) {
            RelayModernRecord.setValue(parentRecord, key, value);
          } else {
            if (value.hasOwnProperty('__id')) {
              // Singular
              const streamID = ((value.__id: any): number);
              const id = this._lookupCacheKey(streamID);
              RelayModernRecord.setLinkedRecordID(parentRecord, key, id);
            } else if (value.hasOwnProperty('__ids')) {
              // Plural
              const streamIDs = ((value.__ids: any): Array<number | null>);
              const ids = streamIDs.map(sID => {
                return sID == null ? null : this._lookupCacheKey(sID);
              });
              RelayModernRecord.setLinkedRecordIDs(parentRecord, key, ids);
            } else {
              invariant(false, 'Expected object to have either __id or __ids.');
            }
          }
      }
    }
  }