S</span><span class="ruby-operator">::</span><span class="ruby-constant">File</span>.<span class="ruby-identifier">decompress</span> <span class="ruby-string">&quot;file.txt.zst&quot;</span>, <span class="ruby-string">&quot;file.txt&quot;</span>

<span class="ruby-constant">ZSTDS</span><span class="ruby-operator">::</span><span class="ruby-constant">Stream</span><span class="ruby-operator">::</span><span class="ruby-constant">Writer</span>.<span class="ruby-identifier">open</span>(<span class="ruby-string">