fix: preserve historical anvil state across suspends - #89
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Suspend/resume kept blocks and logs but dropped historical state, so eth_call at any pre-restart block failed with BlockOutOfRangeError — breaking indexers that replay chain history (bit the bullish staging indexer today). Verified locally: with the flag, a killed-and-resumed anvil answers eth_getBalance at pre-restart blocks; without it, the same query fails. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Adds
--preserve-historical-statesto the anvil args.The idle suspend kills anvil and resumes it from
--state state.json, which restores blocks and logs but not historical state — after any resume,eth_callat a pre-restart block fails withBlockOutOfRangeError. Any indexer replaying chain history breaks (the bullish staging Ponder indexer hit this today: it backfills events from block 0 and pins reads to each event's block).Verified locally with anvil v1.7: mine + transact, kill, resume with the flag →
eth_getBalanceat pre-restart blocks returns correct historical values; without the flag the same query fails.Note for existing stacks: state dropped by past suspends is unrecoverable — the flag only protects history written after it's in effect. Chains that need queryable history from genesis have to be reset once.
🤖 Generated with Claude Code