ExWeb3 / elixir_ethers / 0d8f8c072205542d31910925b58d9bb60b62c3ca-PR-270

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main: 90%

Build Type

Pull #270

github

Committed by alisinabh

Commit Message

Add eth_feeHistory based fee estimation

- New Ethers.fee_history/4 (+ bang variant) wrapping eth_feeHistory with all
  quantities decoded to integers; also usable in Ethers.batch/2 via
  {:fee_history, [block_count, newest_block, reward_percentiles]}
- New Ethers.estimate_fees/1 (+ bang variant): estimates EIP-1559 fees from the
  median of recent blocks' priority fees sampled at a percentile selected by
  :speed (:slow/:standard/:fast or a raw percentile), with
  max_fee_per_gas = 2 * next_base_fee + max_priority_fee_per_gas
- Transaction auto-fill now prices missing max_fee_per_gas /
  max_priority_fee_per_gas through estimate_fees instead of a margin over
  eth_gasPrice, falling back to the legacy estimation on RPC clients without
  eth_feeHistory support (the new adapter callback is optional)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012pKYp3j1ew76CY7HA2nBTF

Pull Request Pull Request #270: Add `eth_feeHistory` based fee estimation

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