Configring node js.

node_modules/jszip/lib/flate.js

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+'use strict';
+var USE_TYPEDARRAY = (typeof Uint8Array !== 'undefined') && (typeof Uint16Array !== 'undefined') && (typeof Uint32Array !== 'undefined');
+
+var pako = require("pako");
+var utils = require("./utils");
+var GenericWorker = require("./stream/GenericWorker");
+
+var ARRAY_TYPE = USE_TYPEDARRAY ? "uint8array" : "array";
+
+exports.magic = "\x08\x00";
+
+/**
+ * Create a worker that uses pako to inflate/deflate.
+ * @constructor
+ * @param {String} action the name of the pako function to call : either "Deflate" or "Inflate".
+ * @param {Object} options the options to use when (de)compressing.
+ */
+function FlateWorker(action, options) {
+    GenericWorker.call(this, "FlateWorker/" + action);
+
+    this._pako = null;
+    this._pakoAction = action;
+    this._pakoOptions = options;
+    // the `meta` object from the last chunk received
+    // this allow this worker to pass around metadata
+    this.meta = {};
+}
+
+utils.inherits(FlateWorker, GenericWorker);
+
+/**
+ * @see GenericWorker.processChunk
+ */
+FlateWorker.prototype.processChunk = function (chunk) {
+    this.meta = chunk.meta;
+    if (this._pako === null) {
+        this._createPako();
+    }
+    this._pako.push(utils.transformTo(ARRAY_TYPE, chunk.data), false);
+};
+
+/**
+ * @see GenericWorker.flush
+ */
+FlateWorker.prototype.flush = function () {
+    GenericWorker.prototype.flush.call(this);
+    if (this._pako === null) {
+        this._createPako();
+    }
+    this._pako.push([], true);
+};
+/**
+ * @see GenericWorker.cleanUp
+ */
+FlateWorker.prototype.cleanUp = function () {
+    GenericWorker.prototype.cleanUp.call(this);
+    this._pako = null;
+};
+
+/**
+ * Create the _pako object.
+ * TODO: lazy-loading this object isn't the best solution but it's the
+ * quickest. The best solution is to lazy-load the worker list. See also the
+ * issue #446.
+ */
+FlateWorker.prototype._createPako = function () {
+    this._pako = new pako[this._pakoAction]({
+        raw: true,
+        level: this._pakoOptions.level || -1 // default compression
+    });
+    var self = this;
+    this._pako.onData = function(data) {
+        self.push({
+            data : data,
+            meta : self.meta
+        });
+    };
+};
+
+exports.compressWorker = function (compressionOptions) {
+    return new FlateWorker("Deflate", compressionOptions);
+};
+exports.uncompressWorker = function () {
+    return new FlateWorker("Inflate", {});
+};