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Self-referential worker URLs

vitejs/vite
Based on 2 comments
JavaScript

When creating Web Workers for network communication, use self-referential URL patterns that are resilient to file renaming. This improves portability and reliability of your networking code.

Networking JavaScript

Reviewer Prompt

When creating Web Workers for network communication, use self-referential URL patterns that are resilient to file renaming. This improves portability and reliability of your networking code.

For optimal worker initialization, consider these approaches:

  • Use the direct self-reference: new Worker(import.meta.url)
  • Or with explicit URL construction: new Worker(new URL(import.meta.url))
  • Or using location: new Worker(self.location.href)
// Recommended approach - resilient to file renaming
const worker = new Worker(new URL(import.meta.url));

// Alternative when referencing other worker files
const worker = new Worker(new URL('./worker.js', import.meta.url));

Be aware that when using the same script for both main thread and worker (self-referential pattern), bundlers like Vite will need to bundle the script twice, potentially increasing bundle size but allowing for shared code between contexts.

2
Comments Analyzed
JavaScript
Primary Language
Networking
Category

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