substrings

Looks for substrings found between two given delimiting strings. Find all results and return an array or find the first result and return it.

deepest-walk

The Deepest JSON Object Walking Library: Traverse and Modify Arrays, Objects, Numbers, Strings, and Substrings.

longestrepeatedstrings

Finds duplicated text strings and generates a report about the longest substrings or most frequent words in supplied text