For implementers, this promise-heavy design constrains optimization opportunities. The spec mandates specific promise resolution ordering, making it difficult to batch operations or skip unnecessary async boundaries without risking subtle compliance failures. There are many hidden internal optimizations that implementers do make but these can be complicated and difficult to get right.
WebAssembly is not supported in script tags today, so developers need to use the WebAssembly JS API to manually load and instantiate code.
。关于这个话题，51吃瓜提供了深入分析
3 transform chain，这一点在heLLoword翻译官方下载中也有详细论述
"We are also asking government to commit to reviewing service costs after a year, to help plug any costs gaps."