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| if (options.numberNonEmpty && line.trim()) { | ||
| console.log(`${lineNumber}\t${line}`); | ||
| lineNumber++; | ||
| } else if (options.numberLines) { | ||
| console.log(`${lineNumber}\t${line}`); | ||
| lineNumber++; |
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I've noticed that the logic for printing lines with or without numbers is repeated in two branches of your if-else statement (lines 17-22). If you ever wanted to change how lines are printed, you'd have to update it in both places. How could you extract this logic into a helper function to avoid repeating yourself and make future changes easier?
| const path = require('path'); | ||
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| function cat(files, options) { | ||
| let lineNumber = 1; |
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The variable 'lineNumber' is declared outside the loop that goes through each file. This means if you process multiple files, the line numbers will continue from one file to the next, rather than restarting for each file. Is this the behavior you want? If not, where could you declare 'lineNumber' so that it resets for each file?
| numberLines: false, | ||
| numberNonEmpty: false, |
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The option names 'numberLines' and 'numberNonEmpty' are a bit similar and could be confusing. Could you think of names that make it clearer what each option does, especially for someone reading the code for the first time?
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Borderline useful comment, though I'd maybe have phrased this as "so that if someone sees either one option name without seeing the other, they would know the difference"
| all: false, | ||
| }; | ||
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| let directories = ['.']; |
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You use a variable called 'directories', but in your code, it always contains only one directory (or the default '.'). Do you think the plural name might mislead someone into thinking it can handle multiple directories at once? What name might better reflect its actual use?
| } else if (arg === '-a') { | ||
| options.all = true; | ||
| } else { | ||
| directories = [arg]; |
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You use a variable called 'directories', but in your code, it always contains only one directory (or the default '.'). Do you think the plural name might mislead someone into thinking it can handle multiple directories at once? What name might better reflect its actual use?
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