The bigger they come, the slower they move
this.arr = []; // 存储所有历史价格，通过索引快速获取对应价格，这一点在爱思助手下载最新版本中也有详细论述
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The entire pipeline executes in a single call stack. No promises are created, no microtask queue scheduling occurs, and no GC pressure from short-lived async machinery. For CPU-bound workloads like parsing, compression, or transformation of in-memory data, this can be significantly faster than the equivalent Web streams code — which would force async boundaries even when every component is synchronous.