refactored local packer

ts/export/packer/local.ts

@@ -7,17 +7,13 @@ import {Numbering} from "../../numbering";
 export class LocalPacker extends Packer {
     private stream: fs.WriteStream;
 
-    constructor(document: Document, style: any, properties: Properties, path: string, numbering?: Numbering) {
-
-        if (!numbering) {
-            numbering = new Numbering();
+    constructor(document: Document, styles?: any, properties?: Properties, numbering?: Numbering) {
+        super(document, styles, properties, numbering);
     }
 
-        super(document, style, properties, numbering);
+    pack(path: string): void {
         this.stream = fs.createWriteStream(path);
-    }
-
-    pack(): void {
         super.pack(this.stream);
+        this.stream.close();
     }
 }

ts/export/packer/packer.ts

@@ -6,6 +6,7 @@ import {Document} from "../../docx";
 import {Styles} from "../../styles";
 import {Properties} from "../../properties";
 import {Numbering} from "../../numbering";
+import {DefaultStylesFactory} from "../../styles/factory";
 
 let appRoot = require("app-root-path");
 
@@ -17,7 +18,7 @@ export abstract class Packer {
     private properties: Properties;
     private numbering: Numbering;
 
-    constructor(document: Document, style: any, properties: Properties, numbering: Numbering) {
+    constructor(document: Document, style?: any, properties?: Properties, numbering?: Numbering) {
         this.formatter = new Formatter();
         this.document = document;
         this.style = style;
@@ -25,6 +26,23 @@ export abstract class Packer {
         this.numbering = numbering;
         this.archive = archiver.create("zip", {});
 
+        if (!style) {
+            let stylesFactory = new DefaultStylesFactory();
+            style = stylesFactory.newInstance();
+        }
+
+        if (!properties) {
+            properties = new Properties({
+                creator: "Shan Fu",
+                revision: "1",
+                lastModifiedBy: "Shan Fu"
+            });
+        }
+
+        if (!numbering) {
+            numbering = new Numbering();
+        }
+
         this.archive.on("error", (err) => {
             throw err;
         });

ts/tests/export/localPackerTest.ts

@@ -29,14 +29,14 @@ describe("Packer", () => {
             lastModifiedBy: "Shan Fu"
         });
         stylesFactory = new DefaultStylesFactory();
-        packer = new LocalPacker(document, stylesFactory.newInstance(), properties, "build/tests/test.docx");
+        packer = new LocalPacker(document, stylesFactory.newInstance(), properties);
         // packer = new LocalPacker(document, DefaultStyle(), properties, "build/tests/test.docx");
     });
 
     describe("#pack()", () => {
         it("should create a standard docx file", function (done) {
             this.timeout(99999999);
-            packer.pack();
+            packer.pack("build/tests/test.docx");
             setTimeout(done, 1900);
         });
     });