2.2.1 混乱脚本示例（bad_spider.py）
Node.js already had its own streaming API at the time that was ported to also work in browsers, but WHATWG chose not to use it as a starting point given that it is chartered to only consider the needs of Web browsers. Server-side runtimes only adopted Web streams later, after Cloudflare Workers and Deno each emerged with first-class Web streams support and cross-runtime compatibility became a priority.
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18:43, 27 февраля 2026Силовые структуры
方向遍历顺序说明下一个倒序（从右往左）先处理右侧，栈里存「右侧候选」上一个正序（从左往右）先处理左侧，栈里存「左侧候选」
any value you keep, and unreference (unref) any value you receive.