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This article details the revival of the lastTab Chrome extension, explaining the manifest v3 setup, background scripts, and event listeners that ensure each window retains at least two tabs, while providing full source code snippets and implementation notes.
The upcoming retirement of Chrome Manifest V2 forces extensions to adopt Manifest V3, which requires Chrome Web Store review for updates, dramatically slowing ad‑blocker rule changes and giving YouTube an advantage, while other browsers remain unaffected.
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