In a recent update made to Cloudflare Workers, I made similar kinds of modifications to an internal data pipeline that reduced the number of JavaScript promises created in certain application scenarios by up to 200x. The result is several orders of magnitude improvement in performance in those applications.
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while (stack.length && stack.at(-1) <= cur) {
* @return {string} 移除k位后最小的数字（字符串形式）
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