add offset option

gildas-lormeau · Aug 21, 2024 · 3368a4f · 3368a4f
1 parent 3616673
commit 3368a4f
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/index.d.ts b/index.d.ts
@@ -1372,6 +1372,10 @@ export interface ZipWriterConstructorOptions {
    * `true` to write encrypted data when `passThrough` is set to `true`.
    */
   encrypted?: boolean;
+  /**
+   * The offset of the first entry in the zip file.
+   */
+  offset?: number;
   /**
    * Encode the filename and the comment of the entry.
    * 

diff --git a/lib/core/zip-writer.js b/lib/core/zip-writer.js
@@ -119,7 +119,7 @@ class ZipWriter {
 			config: getConfiguration(),
 			files: new Map(),
 			filenames: new Set(),
-			offset: writer.writable.size,
+			offset: options.offset === UNDEFINED_VALUE ? writer.writable.size : options.offset,
 			pendingEntriesSize: 0,
 			pendingAddFileCalls: new Set(),
 			bufferedWrites: 0