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# [Ahead], 3 bytes

    SW@

    S    Slurp entire input to stack
     W   Write entire stack
      @  End

[Try it online!][TIO-ki5gdqtf]

[Ahead]: https://github.com/ajc2/ahead
[TIO-ki5gdqtf]: https://tio.run/##S8xITUz5/z843OH/f4/UnJx8HYXw/KKcFEUA "Ahead – Try It Online"