Method _createRefForSource

packages/db/src/query/builder/index.ts:91–100

* Creates a CollectionRef or QueryRef from a source object * @param source - An object with a single key-value pair * @param context - Context string for error messages (e.g., "from clause", "join clause") * @returns A tuple of [alias, ref] where alias is the source key and ref is the creat

(
    source: TSource,
    context: SourceClauseContext,
  )

   * @returns A tuple of [alias, ref] where alias is the source key and ref is the created reference
   */
  private _createRefForSource<TSource extends Source>(
    source: TSource,
    context: SourceClauseContext,
  ): [string, CollectionRef | QueryRef] {
    const refs = this._createRefsForSource(source, context)
    if (refs.length !== 1) {
      throw new OnlyOneSourceAllowedError(context)
    }
    return refs[0]!
  }

  private _createRefsForSource<TSource extends Source>(
    source: TSource,