feat(wallet-cli): add daemon JSON-RPC socket transport#9108
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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Add the daemon's IPC transport layer for `@metamask/wallet-cli`. This is purely additive plumbing — no `mm` subcommand consumes it yet (commands land in a later slice), so there is no user-visible behavior change. - socket-line: newline-delimited read/write framing over a `net.Socket`. - daemon-client: `sendCommand` (one request per connection, id-correlated, retries once on transient connection errors) and `pingDaemon` (a `getStatus` health probe that classifies unreachable daemons by failure mode: refused / timeout / permission / protocol / other). - rpc-socket-server: `startRpcSocketServer` listens on a Unix socket and dispatches one JSON-RPC request per connection to a handler map, with a built-in `shutdown` method and idle-connection timeout. - daemon-spawn: `ensureDaemon` spawns a detached daemon and polls until the socket is responsive, refusing to take over a wedged or foreign socket. - stop-daemon: `stopDaemon` escalates from a graceful `shutdown` RPC through SIGTERM to SIGKILL, then cleans up the PID and socket files. - prompts: `confirmPurge` wraps the ESM-only `@inquirer/confirm`. - types: add `RpcHandler`, `RpcHandlerMap`, `DaemonStatusInfo`, and `DaemonSpawnConfig`. Adds `@inquirer/confirm` and `@metamask/rpc-errors` dependencies. All daemon modules are covered to the package's 100% thresholds, plus an end-to-end socket integration test exercising both halves over a real Unix socket. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Collapse duplicate @inquirer/* entries introduced by the daemon transport dependencies to their highest resolved versions. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Explanation
@metamask/wallet-cliruns a background daemon that hosts a@metamask/walletinstance; the CLI talks to it over a Unix socket. This PR adds that transport layer. It is purely additive plumbing — nommsubcommand consumes it yet (commands land in a follow-up), so there is no user-visible behavior change.socket-line—writeLine/readLinefor newline-delimited framing over anet.Socket, with an optional read timeout and listener cleanup.daemon-client—sendCommandopens a connection, writes one JSON-RPC request, reads one response, and closes; it correlates the responseidwith the request and retries once on transient connection errors (ECONNREFUSED/ECONNRESET).pingDaemonis a lightweightgetStatushealth probe that distinguishes "no daemon" (absent) from "daemon present but unreachable", classifying the latter by failure mode (refused/timeout/permission/protocol/other).rpc-socket-server—startRpcSocketServerlistens on a Unix socket and dispatches one JSON-RPC request per connection to a handler map. It intercepts a built-inshutdownmethod, enforces one-request-per-connection, times out idle connections, and returns aclose()handle.daemon-spawn—ensureDaemonspawns a detached daemon process and polls until the socket is responsive, refusing to take over a wedged or foreign-owned socket. Resolves the entry point fromdist(prod) orsrcviatsx(dev).stop-daemon—stopDaemonescalates from a gracefulshutdownRPC throughSIGTERMtoSIGKILL, then removes the PID and socket files best-effort.prompts—confirmPurgewraps the ESM-only@inquirer/confirmvia dynamic import.types— addsRpcHandler,RpcHandlerMap,DaemonStatusInfo, andDaemonSpawnConfig.Adds
@inquirer/confirmand@metamask/rpc-errorsdependencies. Every daemon module is covered to the package's 100% coverage thresholds, plus asocket-integration.test.tsthat exercises the client and server together over a real Unix socket (framing, id correlation, the one-request-per-connection invariant, and real shutdown timing).References
rekm/wallet-cli, feat(wallet-cli): Add wallet CLI with daemon support #8446). They are lifted essentially verbatim from there, split out into this standalone, additive PR and adjusted to apply on the currentmain.Checklist
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