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+# Zip Module (JavaScript SDK APIs)
+
+## Constraints
+None
+## Modules to Import
+import zlib from '@ohos.zlib'
+## zlib.zipFile
+zipFile(inFile:string, outFile:string, options: Options): Promise<void>;
+Zips a file. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.BundleManager.Zlib
+
+**Parameters**
+
+| Name   | Type                               | Mandatory| Description                                       |
+| ------- | ----------------------------------- | ---- | ------------------------------------------- |
+| inFile  | string                              | Yes  | Path of the folder or file to zip.           |
+| outFile | string                              | Yes  | Path of the zipped file. The file name extension is .zip.|
+| options | [Options](#options)| No  | Optional parameters for the zip operation.                             |
+
+**Return value**
+
+| Type          | Description                                                |
+| -------------- | ---------------------------------------------------- |
+| Promise\<void> | Returns **ERROR_CODE_OK** if the operation is successful; returns **ERROR_CODE_ERRNO** otherwise.|
+
+**Example 1**
+
+```javascript
+
+// Zip a file.
+import zlib from '@ohos.zlib'
+var inFile = "/xxx/filename.xxx";
+var outFile = "/xxx/xxx.zip";
+var options = {};
+options.level = zlib.CompressLevel.COMPRESS_LEVEL_DEFAULT_COMPRESSION;
+options.memLevel = zlib.MemLevel.MEM_LEVEL_DEFAULT;
+options.strategy = zlib.CompressStrategy.COMPRESS_STRATEGY_DEFAULT_STRATEGY;
+
+zlib.zipFile(inFile, outFile, options).then((data) => {
+    if (data == zlib.ErrorCode.ERROR_CODE_OK) {
+        console.log("zipFile OK");
+    } else {
+        console.log("zipFile NG");
+    }
+}).catch((err)=>{
+    console.log("catch((err)=>" + err);
+});
+
+```
+
+**Example 2**
+
+```
+// Zip a folder.
+import zlib from '@ohos.zlib'
+var inFile = "/xxx/xxx";
+var outFile = "/xxx/xxx.zip";
+var options = {};
+options.level = zlib.CompressLevel.COMPRESS_LEVEL_DEFAULT_COMPRESSION;
+options.memLevel = zlib.MemLevel.MEM_LEVEL_DEFAULT;
+options.strategy = zlib.CompressStrategy.COMPRESS_STRATEGY_DEFAULT_STRATEGY;
+
+zlib.zipFile(inFile , unzipDir, options).then((data) => {
+    if (data == zlib.ErrorCode.ERROR_CODE_OK) {
+        console.log("zipFile OK");
+    } else {
+        console.log("zipFile NG");
+    }
+}).catch((err)=>{
+    console.log("catch((err)=>" + err);
+});
+```
+
+## zlib.unzipFile
+
+unzipFile(inFile:string, outFile:string, options: Options): Promise<void>;
+
+Unzips a file. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.BundleManager.Zlib
+
+**Parameters**
+
+| Name   | Type                               | Mandatory| Description                               |
+| ------- | ----------------------------------- | ---- | ----------------------------------- |
+| inFile  | string                              | Yes  | Path of the file to unzip. The file name extension is .zip.|
+| outFile | string                              | Yes  | Path of the unzipped file.                 |
+| options | [Options](#options)| No  | Optional parameters for the unzip operation.                     |
+
+**Return value**
+
+| Type          | Description                                                        |
+| -------------- | ------------------------------------------------------------ |
+| Promise\<void> | Returns **ERROR_CODE_OK** if the operation is successful; returns **ERROR_CODE_ERRNO** otherwise.|
+
+**Example**
+
+```javascript
+// Unzip a file.
+import zlib from '@ohos.zlib'
+var inFile = "/xx/xxx.zip";
+var outFile = "/xxx";
+
+var options = {};
+options.level = zlib.CompressLevel.COMPRESS_LEVEL_DEFAULT_COMPRESSION;
+options.memLevel = zlib.MemLevel.MEM_LEVEL_DEFAULT;
+options.strategy = zlib.CompressStrategy.COMPRESS_STRATEGY_DEFAULT_STRATEGY;
+
+zlib.unzipFile(inFile, outFile, options).then((data) => {
+    if (data == zlib.ErrorCode.ERROR_CODE_OK) {
+        console.log("unzipFile OK");
+    } else {
+        console.log("unzipFile NG");
+    }
+}).catch((err)=>{
+    console.log("catch((err)=>" + err);
+})
+	
+```
+
+## options
+
+| Name                       |                                                              |
+| --------------------------- | ------------------------------------------------------------ |
+| level?: CompressLeve        | See [zip.CompressLevel](#zip.CompressLevel).|
+| memLevel?: MemLevel         | See [zip.MemLevel](#zip.MemLevel)       |
+| strategy?: CompressStrategy | See [zip.CompressStrategy](#zip.CompressStrategy)|
+
+## zip.MemLevel
+
+| MEM_LEVEL_MIN     | Minimum memory used by the **zip** API during compression.|
+| ----------------- | -------------------------------- |
+| MEM_LEVEL_MAX     | Maximum memory used by the **zip** API during compression.|
+| MEM_LEVEL_DEFAULT | Default memory used by the **zip** API during compression.|
+
+## Zip.CompressLevel
+
+| Name                                   | Description             |
+| --------------------------------------- | ----------------- |
+| COMPRESS_LEVEL_NO_COMPRESSION : 0       | Compress level 0 that indicates uncompressed.|
+| COMPRESS_LEVEL_BEST_SPEED : 1           | Compression level 1 that gives the best speed. |
+| COMPRESS_LEVEL_BEST_COMPRESSION :9      | Compression level 9 that gives the best compression.     |
+| COMPRESS_LEVEL_DEFAULT_COMPRESSION : -1| Default compression level.     |
+
+## Zip.CompressStrategy
+
+| Name                                  | Description                    |
+| -------------------------------------- | ------------------------ |
+| COMPRESS_STRATEGY_DEFAULT_STRATEGY : 0 | Default compression strategy.            |
+| COMPRESS_STRATEGY_FILTERED : 1         | Filtered compression strategy.|
+| COMPRESS_STRATEGY_HUFFMAN_ONLY : 2     | Huffman coding compression strategy.  |
+| OMPRESS_STRATEGY_RLE : 3               | RLE compression strategy.        |
+| COMPRESS_STRATEGY_FIXED : 4            | Fixed compression strategy.          |
+
+## zip.ErrorCode
+
+| Name                | Description        |
+| -------------------- | ------------ |
+| ERROR_CODE_OK: 0     | The API is successfully called.|
+| ERROR_CODE_ERRNO:- 1 | Failed to call the API.|