vinkius-labs/mcp-fusion

v3.17.3 Bugfix

This release fixes issues for SREs watching stability and regressions.

Published 1mo MCP Developer Tools

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✓ No known CVEs patched

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✓ No known CVEs patched in this version

Topics

mcp mcp-framework mcp-server model-context-protocol

Affected surfaces

breaking_upgrade

Summary

AI summary

Fixed V8 isolate crash when AsyncLocalStorage was missing in edge-stub.ts.

Full changelog

Fixed

@vurb/core — Edge stub missing AsyncLocalStorage (V8 isolate boot crash) — edge-stub.ts did not export AsyncLocalStorage, but @vurb/core's own ask.ts executes new AsyncLocalStorage() at module load time (top-level). When esbuild compiled the server for edge deployment, import { AsyncLocalStorage } from 'node:async_hooks' was resolved to the edge-stub Proxy, which returned an arrow function ((...args) => CRASH(prop)) for the missing property. Arrow functions are not constructable in JavaScript — new (arrow)() throws TypeError: is not a constructor. Added AsyncLocalStorage as a Tier 1 structural stub (real class, synchronous stack-based store) alongside the existing EventEmitter, Readable, Writable, and Server stubs.

Changed

All @vurb/* cross-dependencies updated to ^3.17.3 — Ensures consistent resolution across the monorepo.

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About vinkius-labs/mcp-fusion

A TypeScript framework for building production-ready MCP servers with automatic tool discovery, multi-transport support (stdio/SSE/HTTP), built-in validation, and zero-config setup.

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Related context

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Earlier breaking changes

v4.0.0 All packages now published under the `@mcpfusion` npm scope.
v4.0.0 GitHub repository renamed to vinkius-labs/mcpfusion; npm packages under @mcpfusion scope.
v4.0.0 All source code, documentation, CLI output, workflows, and npm packages now use the @mcpfusion scope.