Create a new PDF as a Buffer + Upgrade to Muhammara 3.0.0

README.md

@@ -135,6 +135,23 @@ pdfDoc
     .endPDF(()=>{ /* done! */ });
 ```
 
+### Create a new PDF as a Buffer 
+
+```javascript
+const HummusRecipe = require('hummus-recipe');
+const pdfDoc = new HummusRecipe(Buffer.from('new'), null, {
+    version: 1.6,
+    author: 'John Doe',
+    title: 'Hummus Recipe',
+    subject: 'A brand new PDF'
+});
+
+const pdfBuffer = pdfDoc
+    .createPage('letter-size')
+    .endPage()
+    .endPDF();
+```
+
 ## Modify an existing PDF
 
 ```javascript

index.d.ts

@@ -54,6 +54,7 @@ declare namespace Recipe {
         title?: string;
         subject?: string;
         keywords?: string[];
+        [key: string]: unknown;
     }
 
     interface CommentOptions {
@@ -187,7 +188,7 @@ declare namespace Recipe {
 }
 
 declare class Recipe {
-    constructor(src: string, output: string, options?: Recipe.RecipeOptions);
+    constructor(src: string|Buffer, output: string, options?: Recipe.RecipeOptions);
 
     constructor(buffer: Buffer, options?: Recipe.RecipeOptions);
 
@@ -275,7 +276,7 @@ declare class Recipe {
         options?: Recipe.RectangleOptions
     ): Recipe;
 
-    endPDF(callback?: Recipe.EndPDFCallback): Recipe;
+    endPDF(callback?: Recipe.EndPDFCallback): Buffer|undefined;
 }
 
 export = Recipe;

lib/Recipe.js

@@ -7,7 +7,7 @@ const streams = require('memory-streams');
  * @desc Create a pdfDoc
  * @namespace
  * @constructor
- * @param {string} src - The file path or Buffer of the src file.
+ * @param {string|Buffer} src - The file path or Buffer of the src file.
  * @param {string} output - The path of the output file.
  * @param {Object} [options] - The options for pdfDoc
  * @param {number} [options.version] - The pdf version
@@ -27,21 +27,22 @@ class Recipe {
         this.src = src;
         // detect the src is Buffer or not
         this.isBufferSrc = this.src instanceof Buffer;
-        this.isNewPDF = (!this.isBufferSrc && src.toLowerCase() === 'new');
+        this.isNewPDF = src.toString().toLowerCase() === 'new';
         this.encryptOptions = this._getEncryptOptions(options, this.isNewPDF);
         this.options = Object.assign({}, options, this.encryptOptions);
         this.current = {};
         this.current.defaultFontSize = 14;
 
         if (this.isBufferSrc) {
             this.outStream = new streams.WritableStream();
-            this.output = output;
+            this.output = this.isNewPDF ? null : output;
         } else {
             this.output = output || src;
             if (this.src) {
                 this.filename = path.basename(this.src);
             }
         }
+
         this.muhammara = muhammara;
         this.logFile = 'muhammara-error.log';
 
@@ -69,7 +70,8 @@ class Recipe {
 
     _createWriter() {
         if (this.isNewPDF) {
-            this.writer = muhammara.createWriter(this.output,
+            this.writer = muhammara.createWriter(
+                this.isBufferSrc ? new muhammara.PDFStreamForResponse(this.outStream) : this.output,
                 Object.assign( {}, this.encryptOptions, {
                     version: this._getVersion(this.options.version)
                 })
@@ -201,6 +203,7 @@ class Recipe {
      * @function
      * @memberof Recipe
      * @param {function} callback - The callback function.
+     * @returns {Buffer|undefined}
      */
     endPDF(callback) {
         this._writeInfo();
@@ -266,7 +269,16 @@ class Recipe {
             } else {
                 return callback();
             }
+        } else {
+            if (this.isBufferSrc) {
+                if (this.output) {
+                    return this.output
+                } else {
+                    return this.outStream.toBuffer()
+                }
+            }
         }
+
     }
 
     /**