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This is the @throws decorator.
This decorator requires
reanalyze, a code analysis tool for ReScript, to be installed. Click here to read about how you get started with reanalyze..
@throws is picked up by reanalyze's exception analysis, and acknowledges that a function can throw exceptions that are not caught, and suppresses a warning in that case. Callers of the functions are then subjected to the same rule. Example @throws(Exn) or @throws([E1, E2, E3]) for multiple exceptions.