if (chunks === null) {
while (stack.length && stack.at(-1) <= cur) {
，更多细节参见WPS官方版本下载
Since then, the WebAssembly CG has dramatically expanded the core capabilities of the language, adding shared memories, SIMD, exception handling, tail calls, 64-bit memories, and GC support, alongside many smaller improvements such as bulk memory instructions, multiple returns, and reference values.
// Flush: finalize compression