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    • The signature is identical to useEffect, but it fires synchronously after all DOM mutations. Use this to read layout from the DOM and synchronously re-render. Updates scheduled inside useLayoutEffect will be flushed synchronously, before the browser has a chance to paint.

      Prefer the standard useEffect when possible to avoid blocking visual updates.

      If you’re migrating code from a class component, useLayoutEffect fires in the same phase as componentDidMount and componentDidUpdate.

      Parameters

      Returns void