# Tear down when done
When fetch() returns a response, the body is a ReadableStream. If you only check the status and don't consume or cancel the body, what happens? The answer varies by implementation, but a common outcome is resource leakage.
。Line官方版本下载对此有专业解读
That looks something like this for a small grid where our snake is moving down. Notice that we delete and re-print 3 entire lines!
Transform backpressure gaps: Pull-through transforms execute on-demand. Data doesn't cascade through intermediate buffers; it flows only when the consumer pulls. Stop iterating, stop processing.
self.config.sleep_min,