metamask/eth-json-rpc-filters

`@metamask/eth-json-rpc-filters` is a JSON-RPC middleware for Ethereum filter methods, designed to work with `json-rpc-engine`. It provides implementations for methods like `eth_newFilter`, `eth_newBlockFilter`, and `eth_getFilterLogs`, and is backed by an `eth-block-tracker` and web3 provider interface. This project is intended for developers building Ethereum applications or tools that need to handle blockchain event filtering efficiently.