I would first recommend you try your script while passing the -O0 --compile=min flags to Julia and check how the times change. If your script is more IO-bound than CPU-bound then this should be enough. If your script does a lot of computational effort, then DaemonMode can help you (the first run will be yet slow, but every other run will be faster). I would turn to PackageCompiler.jl as a last resort.
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