I have done it, after doing lot of R&D , their are few steps to follow as below : Install :

npm install jspdf --save

typings install dt~jspdf --global --save

npm install @types/jspdf --save

Add following in angular-cli.json:

"scripts": [ "../node_modules/jspdf/dist/jspdf.min.js" ]

html:

<button (click)="download()">download </button>

component ts:

import { Component, OnInit, Inject } from '@angular/core';
import * as jsPDF from 'jspdf'
@Component({
  ...
  providers: [
    { provide: 'Window',  useValue: window }
  ]
})
export class GenratePdfComponent implements OnInit {

  constructor(
    @Inject('Window') private window: Window,
    ) { }

  download() {

        var doc = new jsPDF();
        doc.text(20, 20, 'Hello world!');
        doc.text(20, 30, 'This is client-side Javascript, pumping out a PDF.');
        doc.addPage();
        doc.text(20, 20, 'Do you like that?');

        // Save the PDF
        doc.save('Test.pdf');
    }
}

What I found worked was adding:

<script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/0.4.1/html2canvas.js"></script>

to the index.html file (it could presumably be elsewhere).

I then used:

const elementToPrint = document.getElementById('foo'); //The html element to become a pdf
const pdf = new jsPDF('p', 'pt', 'a4');
pdf.addHTML(elementToPrint, () => {
    doc.save('web.pdf');
});

Which no longer uses html2canvas in the code.
You can then remove the following import:

import * as html2canvas from 'html2canvas';

After trying so many different solutions for this issue now I've found that both the addHTML and fromHTML is depreciated in latest versions of jspdf and they are replaced with just html. For those who are seeking for a better solution to work with jspdf and Angular 10 here is what looks working and a better result that I've found so far.

To import jspdf version (2.x.x), just simply do: import { jsPDF } from 'jspdf';.

You won't need to include any of the dependencies into angular.json scripts like you would do in previous versions. And if you add scripts of jspdf or html2canvas insideindex.html, also remove them. By running npm install jspdf it also install the html2canvas which is also dynamically imported by jspdf.

import { Component, OnInit, ViewChild, ElementRef } from '@angular/core';
import { jsPDF } from 'jspdf';

.....

 @ViewChild('couponPage', { static: true }) couponPage: ElementRef;

.......

openPDF(): void {
  const DATA = this.couponPage.nativeElement;
  const doc: jsPDF = new jsPDF("p", "mm", "a4");
  doc.html(DATA, {
     callback: (doc) => {
       doc.output("dataurlnewwindow");
     }
  });
}

Though for me still using doc.html() method, it wouldn't use the css style that I used for my page.

Using jspdf with the latest angular cli version is really easy. Simply install jspdf from npm and use it something like this:

app.component.ts

// Note that you cannot use import jsPDF from 'jspdf' if you 
// don't install jspdf types from DefinitelyTyped
let jsPDF = require('jspdf');
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'app works!';

  constructor() {
    let doc = new jsPDF();
    doc.text("Hello", 20, 20);
    doc.save('table.pdf');
  }
}

For old versions of angular cli based on systemjs instead of webpack

Here is a link to a description of one way to work with the angular-cli and libraries in umd or plain javascript. It basically involves using declare jsPDF: any together with importing the library in systemjs vendor files.

I was having this same problem, I was able to fix it by including html2canvas.

npm install html2canvas --save

//Since I'm using browserify I then ran
global.html2canvas = require("html2canvas");

(https://github.com/niklasvh/html2canvas)

jsPDF relies on that for the addHTML function, but I never saw that mentioned anywhere on the site until I found a bug report about it (https://github.com/MrRio/jsPDF/issues/270)

Is working for me Angular 5.

To work with jspdf-autotable in angular 5, one must install jspdf and jspdf-autotable via npm

npm install jspdf --save
npm install @types/jspdf --save-dev
npm install jspdf-autotable --save

also add the jspdf and jspdf-autotable files to the scripts array in angular-cli.json

"scripts": [
"../node_modules/jspdf/dist/jspdf.min.js",
"../node_modules/jspdf-autotable/dist/jspdf.plugin.autotable.js"
],

and in component never import jspdf or jspdf-autotable just.

Forget about the following import.

    import * as jsPDF from 'jspdf'; 
    import 'jspdf-autotable';

Just use Before @Component:

declare var jsPDF: any;

Your component (related parts ):

declare var jsPDF: any;

@Component({
    selector: "energy-login",
    templateUrl: "./login.component.html",
    styleUrls: ["./login.component.scss"]
})

export class MyComponent implements OnInit {

    constructor() {}

    ngOnInit() {}

    downloadPDF() {

        let columns = ["ID", "Name", "Country"];
        let rows = [
            [1, "Shaw", "Tanzania"],
            [2, "Nelson", "Kazakhstan"],
            [3, "Garcia", "Madagascar"],
        ];

        let doc = new jsPDF('l', 'pt');
        doc.autoTable(columns, rows); // typescript compile time error
        doc.save('table.pdf');
        }
    }