river-build river .cursorrules file for TypeScript (stars: 28)

# Instructions

Yor are an expert go developer.
Reference rules that are used in your answers.

# Project Overview

This is a module implementing a backend server for crypto chat application.

# Technology stack

- Go 1.23
- Protocol Buffers
- gRPC/gRPCWeb provided by connectrpc.com library
- HTTP/2 provided by x/net/http2 and net/http
- Ethereum client provided by go-ethereum library
- Postgres database provided by pgx/v5 library
- Logging provided by go's slog library
- require and assert test helpers provided by github.com/stretchr/testify
- OpenMetrics provided by prometheus
- Tracing provided by opentelemetry
- Command line parsing provided by cobra
- Flags parsing provided by viper
- Rust is used for the mls implementation

# Directory structure

    |-cmd  # command line commands
    |-config  # shared config struct
    |-contracts  # abigen generated contract bindings
    | |-base  # bindings for base chain contracts
    | |-river  # bindings for river chain contracts
    | |-src  # Solidity contract source code
    | |-types  # extra helpers for working with contract generatedtypes
    |-docker  # files for docker container
    |-env  # shared configuration fils for supproted environments
    |-mls  # server-side mls implementation in Rust
    | |-mls-tools
    | | |-crates  # ignore
    | | |-target  # build artifacts: ignore
    |-node  # stream node implementation
    | |-auth  # on-chain auth implementation for river entitlements
    | |-base  # RiverError type and other shared helpers
    | |-crypto  # Classes to interact with blockchain
    | |-dlog  # slog extension to provide human-readable formatting
    | |-events  # in-memory cache for streams loaded from db, stream event parsing, miniblock generation
    | |-http_client  # http client for making requests to other nodes
    | |-infra  # shared infra code for node
    | |-lint_extensions  # shared lint extensions
    | |-logs  # ignore
    | |-mls_service  # mls service implementation
    | | |-mls_tools  # mls tools implementation
    | |-nodes  # code for tracking other nodes
    | |-notifications  # notification service implementation
    | | |-push
    | | |-sync
    | | |-types
    | |-protocol  # generated protobuf bindings
    | | |-protocolconnect  # generated gRPC bindings
    | | |-src  # Protocol Buffers definitions
    | |-protocol_extensions  # extra protobuf helpers
    | |-registries  # helper classes for working with node and stream on-chain registries
    | |-rpc  # rpc server implementation
    | | |-render  # rpc render implementation
    | | | |-templates  # rpc render templates
    | | |-sync  # cross-node stream sync aggregator implementation
    | | | |-client
    | |-rules  # rule engine implementation for adding events to streams
    | |-run_files  # ignore
    | |-scrub  # stream scrubber implementation
    | |-shared  # StreamId implementation and other shared types
    | |-storage  # stream storage in pg database implementation
    | |-testutils  # test helpers
    | | |-dbtestutils  # db test helper to create and clean up test db
    | | |-mocks  # mock implementations for testing
    | | |-testcert  # HTTPS test certs for testing
    | | |-testfmt  # test formatting helpers
    | |-utils  # shared utils
    |-river_node  # river node main
    | |-version  # version of the node
    |-run_files  # ignore: local test environment deployment files
    |-scripts  # support scripts
    |-tools  # support tools
    | |-migrate_db  # db migration tool
    |-xchain  # xchain implementation to check on-chain entitlements
    | |-bindings
    | | |-erc1155
    | | |-erc165
    | | |-erc20
    | | |-erc721
    | | |-erc777
    | | |-ierc5313
    | |-client_simulator
    | |-common
    | |-contracts
    | |-entitlement
    | |-examples
    | |-server
    | |-util