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getting "window is not defined" error with nodejs.

See original GitHub issue

Getting “ReferenceError: window is not defined” when using with nodejs. Below given is my approach.

var mergeImages = require("merge-images");

mergeImages([
 { src: image1.buffer },
 { src: image2.buffer }
]).then(b64 => {
 console.log(b64);
});

Issue Analytics

State:
Created 4 years ago
Comments:5

Top GitHub Comments

1reaction

RedSparr0wcommented, Mar 21, 2020

You can solve this by using:

const mergeImages = require('merge-images');
const { Canvas, Image } = require('canvas');
 
mergeImages(['./body.png', './eyes.png', './mouth.png'], {
  Canvas: Canvas,
  Image: Image
}).then(b64 => ...);

Info from the readme here: https://www.npmjs.com/package/merge-images#nodejs-usage

1reaction

kapil-joshicommented, Sep 11, 2019

Actually, i changed my code as below:


const imgMerge = require("merge-images"); 
const nodeCanvas = require('canvas').Canvas;

const img1 = 'data:image/jpeg;base64,/9j/4AAQSkZJRgAB........';
const img2 = 'data:image/jpeg;base64,/9j/4AAQSkZJRgAB........';
const img3 = 'data:image/jpeg;base64,/9j/4AAQSkZJRgAB........';

return imgMerge([{ src: new Image(img1), x: 0, y: 0 },
          { src: new Image(img2), x: 100, y: 0 },
          { src: new Image(img3), x: 500, y: 0 }], {Canvas: nodeCanvas})
          .then(b64 => agent.add(new Image(b64)));

But getting an error:

Image is not a constructor at /srv/node_modules/merge-images/dist/index.umd.js:39:13 at new Promise (<anonymous>) at /srv/node_modules/merge-images/dist/index.umd.js:32:54 at Array.map (<anonymous>) at /srv/node_modules/merge-images/dist/index.umd.js:32:23 at new Promise (<anonymous>) at mergeImages (/srv/node_modules/merge-images/dist/index.umd.js:21:9)

Some one please help asap.

Thanks, Kapil

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