Node compatibility tests and improvements

[vigoo]

Summary

Massive expansion of Node.js API compatibility, backed by a comprehensive vendored test suite from Node.js v22 and extensive third-party library testing.

Node.js Built-in Module Expansion

Added 38 new built-in modules and significantly enhanced existing ones:

New modules: node:assert, node:async_hooks, node:cluster, node:constants, node:dgram, node:diagnostics_channel, node:dns, node:domain, node:events (replacing eventemitter), node:http2, node:https, node:inspector, node:intl, node:net, node:perf_hooks, node:punycode, node:querystring, node:readline, node:repl, node:sqlite, node:test, node:timers, node:tls, node:trace_events, node:tty, node:v8, node:vm, node:worker_threads, node:zlib, and more
Major enhancements: node:fs, node:crypto/WebCrypto, node:http, node:buffer, node:path, node:stream, node:url, node:util, node:console, node:process, node:os

Node.js v22 Compatibility Test Suite

Vendored 6,847 tests from the official Node.js v22 test suite with a custom test runner and report generator:

Third-Party Library Testing

Tested 200 npm libraries across 16 categories (AI/ML SDKs, databases, HTTP clients, testing frameworks, observability, templating, validation, etc.):

Notable compatible libraries include: Axios, OpenAI SDK, Anthropic SDK, Zod, Drizzle ORM, Prisma, pg, mysql2, Lodash, date-fns, Winston, Pino, uuid, semver, Handlebars, EJS, and many more.

Test Infrastructure

• Split monolithic runtime.rs into per-module test files for faster iteration
• Added node_compat.rs test harness with parallel execution using test-r
• Added node_compat_report.rs for automated compatibility report generation
• Created tools/ai-dev-tools/ — a TypeScript CLI for batch library testing workflows
• Added 7 agent skills for development workflows (skeleton development, fixing node compat tests, adding built-in modules, etc.)
• CI pipeline improvements with shared setup action and parallelized test jobs

Other Changes

• Updated rquickjs dependency with rejection tracking support
• Added rusqlite vendor submodule for node:sqlite support
• Included Cargo.lock in skeleton for reproducible builds
• Updated README with comprehensive supported APIs documentation