chainHeightFn

	Source (upstream pre-purge)	Current
File	eth/fetcher/block_fetcher.go	block_fetcher_pow.go
Symbol	chainHeightFn	chainHeightFn
Ref	f4d53133f~1	etc/v1.17.3-full-node

3-way merge — purge → getc ← upstream

pre-purge

↗// chainHeightFn is a callback type to retrieve the current chain height.

type chainHeightFn func() uint64

core-geth validation — **Identical** ✅

| | | |---|---| | File | [`block_fetcher.go`](https://github.com/etclabscore/core-geth/blob/v1.12.20/eth/fetcher/block_fetcher.go) | | Symbol | `chainHeightFn` | | Ref | `v1.12.20` |

← Sync & Downloader