Function assertEqual

test/unit-proxy-agent.mjs:35–38

(a, b, msg)

}

function assertEqual(a, b, msg) {
    const as = JSON.stringify(a), bs = JSON.stringify(b);
    if (as !== bs) throw new Error(msg || `Expected ${bs}, got ${as}`);
}

// ─── 内联 mock 实现（模拟 proxy-agent.ts 核心逻辑，不依赖 dist）──────