produce(x: number) { return x * 2; },
"Reddit's biggest weakness is that credibility can look like consensus, like most other social media sites and their algorithms," says Dr Yusuf Oc, senior lecturer in marketing at Bayes Business School in London.，详情可参考新收录的资料
new ReadableStream({。关于这个话题，新收录的资料提供了深入分析
frame.returnValue = { value: frame.accumulator };