Function processRow

packages/db/src/query/compiler/select.ts:126–148

* Processes a single row to generate select results

(
  [key, namespacedRow]: [unknown, NamespacedRow],
  ops: Array<SelectOp>,
)

 * Processes a single row to generate select results
 */
function processRow(
  [key, namespacedRow]: [unknown, NamespacedRow],
  ops: Array<SelectOp>,
): [unknown, typeof namespacedRow & { $selected: any }] {
  const selectResults: Record<string, any> = {}

  for (const op of ops) {
    if (op.kind === `merge`) {
      processMerge(op, namespacedRow, selectResults)
    } else {
      processNonMergeOp(op, namespacedRow, selectResults)
    }
  }

  // Return the namespaced row with $selected added
  return [
    key,
    {
      ...namespacedRow,
      $selected: selectResults,
    },
  ] as [unknown, typeof namespacedRow & { $selected: typeof selectResults }]
}

/**
 * Processes the SELECT clause and places results in $selected