Added object type validation for parameters in method createPdf and createPdfKitDocument

Author: liborm85

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- Added object type validation for parameters in method `createPdf` and `createPdfKitDocument`
+
 ## 0.2.21 - 2025-12-22
 
 - Added `wordBreak` property for `text` node, supported values: `'normal'` (default), `'break-all'`

src/browser-extensions/pdfMake.js

@@ -1,6 +1,7 @@
 'use strict';
 
 var isFunction = require('../helpers').isFunction;
+var isObject = require('../helpers').isObject;
 var isUndefined = require('../helpers').isUndefined;
 //var isNull = require('../helpers').isNull;
 var pack = require('../helpers').pack;
@@ -321,6 +322,10 @@ Document.prototype.getStream = function (options, cb) {
 
 module.exports = {
 	createPdf: function (docDefinition, tableLayouts, fonts, vfs) {
+		if (!isObject(docDefinition)) {
+			throw new Error("Parameter 'docDefinition' has an invalid type. Object expected.");
+		}
+
 		if (!canCreatePdf()) {
 			throw 'Your browser does not provide the level of support needed';
 		}

src/printer.js

@@ -15,6 +15,7 @@ var isNumber = require('./helpers').isNumber;
 var isBoolean = require('./helpers').isBoolean;
 var isArray = require('./helpers').isArray;
 var isUndefined = require('./helpers').isUndefined;
+var isObject = require('./helpers').isObject;
 var isPattern = require('./helpers').isPattern;
 var getPattern = require('./helpers').getPattern;
 var SVGtoPDF = require('./3rd-party/svg-to-pdfkit');
@@ -111,6 +112,14 @@ function PdfPrinter(fontDescriptors) {
 PdfPrinter.prototype.createPdfKitDocument = function (docDefinition, options) {
 	options = options || {};
 
+	if (!isObject(docDefinition)) {
+		throw new Error("Parameter 'docDefinition' has an invalid type. Object expected.");
+	}
+
+	if (!isObject(options)) {
+		throw new Error("Parameter 'options' has an invalid type. Object expected.");
+	}
+
 	docDefinition.version = docDefinition.version || '1.3';
 	docDefinition.subset = docDefinition.subset || undefined;
 	docDefinition.tagged = typeof docDefinition.tagged === 'boolean' ? docDefinition.tagged : false;

tests/browser/polyfills.js

@@ -12,7 +12,7 @@ describe('core-js polyfill', function () {
 		};
 
 		var pdf = pdfmake.createPdf(docDefinition);
-		pdf.getStream(() => {
+		pdf.getStream({}, () => {
 			// noop
 		});