Check for self in scope instead of window.

Demonstrandum · Jul 24, 2023 · e9a5f1a · e9a5f1a · vercel · Jul 24, 2023
1 parent fb077a2
commit e9a5f1a
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/lib/BasicCanvas.js b/lib/BasicCanvas.js
@@ -1,13 +1,22 @@
 // Identify Node.js
 const in_node = !!(typeof process !== 'undefined'
     && typeof process.versions.node !== 'undefined');
+const is_worker = !!(typeof window === 'undefined'
+    && typeof self !== 'undefined');
 if (in_node) {
   console.log('Running under Node.js!');
   const window = global;
   global.window = window;
   global.HTMLElement = function HTMLElement() {
     this.width = this.height = 300;
   };
+} else if (is_worker) {
+  console.log('Running in web context without `window`.');
+  const window = self;
+  self.window = self;
+  self.HTMLElement = function HTMLElement() {
+    this.width = this.height = 300;
+  }
 }
 
 // Basic semi-related tools.