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use-everywhere

LeaderStrategy

type LeaderStrategy = "auto" | "web-locks" | "heartbeat";

How the seat is arbitrated.

  • 'web-locks' — the browser’s Web Locks API owns the queue. The lock is released by the browser itself when a tab dies, and holding it does not depend on a timer, so a backgrounded tab cannot be deposed for being throttled. No heartbeat traffic at all.
  • 'heartbeat' — lease-and-claim over the bus. Works anywhere, including plain-http origins where navigator.locks does not exist.
  • 'auto' (default) — Web Locks when available, heartbeat otherwise.