It is also necessary to emphasize that many optimizations are only possible in parts of the spec that are unobservable to user code. The alternative, like Bun "Direct Streams", is to intentionally diverge from the spec-defined observable behaviors. This means optimizations often feel "incomplete". They work in some scenarios but not in others, in some runtimes but not others, etc. Every such case adds to the overall unsustainable complexity of the Web streams approach which is why most runtime implementers rarely put significant effort into further improvements to their streams implementations once the conformance tests are passing.
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美家人力仲介公司董事長林淑如向BBC中文表示，要讓台灣業者全面採行電子業大廠推動的「零付費政策」並不容易。台灣製造業以中小企業為主，資本規模與獲利能力不如電子業巨頭或自行車大廠，「若所有仲介費突然都由雇主承擔，對產業是很大的壓力。」