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add prop to check instead of trying to delete, which fails in Jsdom 21+ #2058

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4 changes: 2 additions & 2 deletions src/init.js
Original file line number Diff line number Diff line change
Expand Up @@ -30,5 +30,5 @@
// NOTE: We're not modifying the global `self` here. We receive its value passed
// to the paper.js function scope, and this is the one that is modified here.
self = self || require('./node/self.js');
var window = self.window,
document = self.document;
var window = self.CANVAS_NOT_FOUND ? null : self.window;
var document = self.document;
5 changes: 2 additions & 3 deletions src/node/canvas.js
Original file line number Diff line number Diff line change
Expand Up @@ -20,12 +20,11 @@ module.exports = function(self, requireName) {
try {
Canvas = require('canvas').Canvas;
} catch(error) {
// Remove `self.window`, so we still have the global `self` reference,
// but no `window` object:
// Add/set CANVAS_NOT_FOUND=true:
// - On the browser, this corresponds to a worker context.
// - On Node.js, it basically means the canvas is missing or not working
// which can be treated the same way.
delete self.window;
self.CANVAS_NOT_FOUND = true;
// Check the required module's name to see if it contains canvas, and
// only complain about its lack if the module requires it.
if (/\bcanvas\b/.test(requireName)) {
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