Examine the chapter06_spellcheck example code in the workbook’s git repository.
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Run the project on your computer
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How does the code work? You might experiment in an interactive
nodesession in your operating system’s terminal or read API documentation:-
The
fsandpathmodules are in the Node.js documentation. -
For the
.splitand.matchfunctions (onString.prototype) andSetobjects, you can refer to the Mozilla Developer Network. -
Feel free to ignore the meaning of
/([^A-Za-z']+)/and/[^A-Za-z']+/: they are both regular expressions in JavaScript.
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How would you categorize the lines of code into layers?
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Can you separate the spell checker code into three layers?
Keep refining your solution until you are happy with it!
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What did you notice during the process of adding layering to the spell check?
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Are there parts of the spell-checking code that other people might have categorized differently?
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Does layering improve the application? Do you feel that the additional complexity is warranted?