Module dev_server 

WASM Development Server

Real HTTP server implementation for serving WASM applications with hot reload. Implements GitHub issue #7: https://github.com/paiml/probar/issues/7

Features

• HTTP server with correct MIME types for WASM
• WebSocket server for hot reload notifications
• File watcher with debouncing
• wasm-pack build integration

Architecture

┌─────────────────────────────────────────────────────────────┐
│                    DevServer                                │
│  ┌──────────────┐     ┌──────────────┐                     │
│  │ HTTP Server  │     │  WS Server   │                     │
│  │ (port 8080)  │     │ (port 8081)  │                     │
│  └──────┬───────┘     └──────┬───────┘                     │
│         │                    │                              │
│         ▼                    ▼                              │
│  ┌──────────────┐     ┌──────────────┐                     │
│  │ Static Files │     │ HotReload    │◀───FileWatcher      │
│  │ .wasm .js    │     │ Messages     │                     │
│  └──────────────┘     └──────────────┘                     │
└─────────────────────────────────────────────────────────────┘

Structs

DevServer

WASM development server with HTTP and WebSocket support

DevServerConfig

WASM development server configuration

DevServerConfigBuilder

Builder for DevServerConfig

FileWatcher

File watcher for hot reload

FileWatcherBuilder

Builder for FileWatcher

ImportRef

Import reference found in HTML/JS files

ImportValidationError

Validation error for a single import

ModuleValidationResult

Result of validating all imports

ModuleValidator

Module validator for checking import resolution

Enums

FileChangeEvent

File change event types

HotReloadMessage

Hot reload message sent to connected clients (JSON serializable)

ImportType

Type of module import

Functions

get_mime_type

Get MIME type for a file path

run_wasm_pack_build

Run wasm-pack build