node.js - jspdf 模块每次都会崩溃，并出现 ReferenceError : window is not defined

Question

我正在开发一个小项目，该项目在 Node 和express中生成pdf，并一直在尝试使用jspdf npm模块，但不知何故，每当我安装该包并需要它时，它都会使我的服务器崩溃。这是我在 server.js 文件中的要求:

var jsPDF = require('jspdf')

这是当我尝试运行我的服务器时它给我的响应:

(window.AcroForm=function(t){var n=window.AcroForm;n.scale=function(t) {return t*(r.internal.scaleFactor/1)},n.antiScale=function(t){return 1/r.internal.scaleFactor*t};var r={fields:[],xForms:[],acroFormDictionaryRoot:null,printedOut:!1,internal:null};e.API.acroformPlugin=r;var i=function(){for(var t in this.acroformPlugin.acroFormDictionaryRoot.Fields){var e=this.acroformPlugin.acroFormDictionaryRoot.Fields[t];e.hasAnnotation&&a.call(this,e)}},o=function(){if(this.acroformPlugin.acroFormDictionaryRoot)throw new Error("Exception while creating AcroformDictionary");this.acroformPlugin.acroFormDictionaryRoot=new n.AcroFormDictionary,this.acroformPlugin.internal=this.internal,this.acroformPlugin.acroFormDictionaryRoot._eventID=this.internal.events.subscribe("postPutResources",l),this.internal.events.subscribe("buildDocument",i),this.internal.events.subscribe("putCatalog",c),this.internal.events.subscribe("pos

ReferenceError: window is not defined

Answer 1

jsPDF库用于客户端(Web 浏览器)，这就是为什么它期望存在窗口变量。幸运的是，有人已经回答了如何使这项工作在服务器端 here 。摘自该答案:

global.window = {document: {createElementNS: () => {return {}} }};
global.navigator = {};
global.btoa = () => {};

var fs = require('fs');
var jsPDF = require('jspdf');

var doc = new jsPDF();
doc.text("Hello", 10, 10);
var data = doc.output();

fs.writeFileSync('./document.pdf', data);

delete global.window;
delete global.navigator;
delete global.btoa;