It started with a flash of insight like a thunderbolt in a snow storm, the sort of insight that can only be induced by high altitude hypoxia and making breakfast.
First writing may be 40,000 years earlier than thought.
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// 栈不为空时才判断（避免访问stack.at(-1)时报错）
const dropNew = Stream.push({ highWaterMark: 2, backpressure: 'drop-newest' });