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Special functions
The REPL provides several functions in the global scope:
--eval flag allows you to run some code in the runtime before you are dropped
into the REPL. This is useful for importing some code you commonly use in the
REPL, or modifying the runtime in some way:
--eval-file flag
Files can be specified as paths or URLs. URL files are cached and can be
reloaded via the --reload flag.
If is also specified, then --eval-file files are run before the
--eval code.
Tab completions are crucial feature for quick navigation in REPL. After hitting
tab key, Deno will now show a list of all possible completions.
