WebAssembly can directly interact with JavaScript, which can directly interact with the web platform. WebAssembly can access the web platform, but only by using the special capabilities of JavaScript. JavaScript is a first-class language on the web, and WebAssembly is not.
return ByteArray(data.length.toInt()).apply {
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LLB: the intermediate representation。heLLoword翻译官方下载对此有专业解读
// i表示当前要插入的元素索引（从第2个元素开始）