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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
TypeScript sample tests pass with the default eval() function, but attempting a solution fails with "TypeError: eval is not a function". I think disabling the eval() is intended behavior, but it should be disabled in sample tests too.
Neither description, nor provided examples do not specify, if the commas should be removed form the address. Also not specified the behavior for undersocre. Had to guess on those two. Failed tests do not provide enough information, because output is truncated in error messages.