Added typehints and mypy test env in tox #120
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…ernal_commands' checks whether its an internal command or not, to make every callback function for every internal command takes no arguments and return None
…tisfy mypy Using isinstance check with (Sequence, Generator, Iterator) rather than with (Mapping, Iterable) for aliases of an internal command: click_repl/utils.py
Updated testing dependencies to include flake8 and mypy: setup.cfg
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This PR adds typehints to the existing code, and added mypy test env in tox to perform type checking in GHA
Also, changed
click_repl.utils._help_internalfunction to just print the help text, rather than returning it, so that all function callbacks for internal command can be in the same type ofCallable[[], None]