Configring node js.

node_modules/jszip/lib/generate/index.js

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+'use strict';
+
+var compressions = require('../compressions');
+var ZipFileWorker = require('./ZipFileWorker');
+
+/**
+ * Find the compression to use.
+ * @param {String} fileCompression the compression defined at the file level, if any.
+ * @param {String} zipCompression the compression defined at the load() level.
+ * @return {Object} the compression object to use.
+ */
+var getCompression = function (fileCompression, zipCompression) {
+
+    var compressionName = fileCompression || zipCompression;
+    var compression = compressions[compressionName];
+    if (!compression) {
+        throw new Error(compressionName + " is not a valid compression method !");
+    }
+    return compression;
+};
+
+/**
+ * Create a worker to generate a zip file.
+ * @param {JSZip} zip the JSZip instance at the right root level.
+ * @param {Object} options to generate the zip file.
+ * @param {String} comment the comment to use.
+ */
+exports.generateWorker = function (zip, options, comment) {
+
+    var zipFileWorker = new ZipFileWorker(options.streamFiles, comment, options.platform, options.encodeFileName);
+    var entriesCount = 0;
+    try {
+
+        zip.forEach(function (relativePath, file) {
+            entriesCount++;
+            var compression = getCompression(file.options.compression, options.compression);
+            var compressionOptions = file.options.compressionOptions || options.compressionOptions || {};
+            var dir = file.dir, date = file.date;
+
+            file._compressWorker(compression, compressionOptions)
+            .withStreamInfo("file", {
+                name : relativePath,
+                dir : dir,
+                date : date,
+                comment : file.comment || "",
+                unixPermissions : file.unixPermissions,
+                dosPermissions : file.dosPermissions
+            })
+            .pipe(zipFileWorker);
+        });
+        zipFileWorker.entriesCount = entriesCount;
+    } catch (e) {
+        zipFileWorker.error(e);
+    }
+
+    return zipFileWorker;
+};