* Pivot flat rows into chart rows keyed by checkedAt (ms). A null position is * plotted at `serpDepth` so it renders inside the muted bottom band and

Interleaves expanded domains' extra links beneath their page row.

* One row per snapshot (newest first) with the previous-check position for the * same device, so the Δ column can reuse DeviceRankCell's 4-case logic

@param {{ from?: string, to: string, repo?: string }} options

* Columns for the referring domains table. When `domainRatings` is provided * (the user clicked "Ahrefs DR"), an Ahrefs DR column is inserted after R

Weekly dates, oldest first, all at noon UTC (so local-time rendering can't * shift a point across a day boundary).

* The **`cancel()`** method of the ReadableStream interface returns a Promise that resolves when the stream is canceled. * * [MDN Reference]

* Fetch results for queued tasks (one free task_get each), persist completed * snapshots, and update run progress. Transient task_get failures stay

Unique domains the DR column keys on, from both the backlinks and referring * domains tables, normalized to match how each table renders its domain.

* Compare two nullable numeric values with nulls always at the bottom, * regardless of the column's current sort direction.

DataForSEO cost for a single SERP request at the given depth.

* The single authenticated `fetch` used by every DataForSEO SDK call. Throws on * non-2xx so the SDK's own `ApiException` path never fires; task-leve