Electron Type-Safe IPC Patterns

Quick Guide: All Electron IPC flows through a preload script using contextBridge.exposeInMainWorld(). Make it type-safe by defining a shared channel map that constrains channel names, payloads, and return types across main, preload, and renderer. For end-to-end type safety with minimal boilerplate, use electron-trpc (tRPC over IPC). For high-throughput streaming or renderer-to-renderer communication, use MessageChannelMain/MessagePort. For CPU-intensive background work, use utilityProcess with parentPort. Always validate IPC input in the main process -- treat renderer messages as untrusted.

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CRITICAL: Before Using This Skill

All code must follow project conventions in CLAUDE.md (kebab-case, named exports, import ordering, import type, named constants)

(You MUST validate and sanitize ALL data received via IPC in the main process -- treat renderer messages as untrusted input)

(You MUST use contextBridge.exposeInMainWorld() in preload scripts -- never expose ipcRenderer directly)

(You MUST define IPC channel names and payload types in a single shared file -- never use untyped string literals for channel names)

(You MUST use ipcMain.handle() / ipcRenderer.invoke() for request-response IPC -- sendSync blocks the renderer)