Added findURLs, isValid, toTitleCase functions and their corresponding test files

[leishab]

No description provided.

[gabeabrams]

In /src/index.ts, import your helper functions in the section where all the helpers are imported, then export your helper functions below in the section marked by // Helpers

[leishab]

findURLs:
This function iterates through and identifies URLs in a block of text, after which it returns their start and end index. The function contains a while loop to use the regex to locate and then match the URL(s) within the block of text, after which the start and end index of the URL is found and pushed to the found array, which is returned to the user.

The test file for this function involves various test cases which test whether the function returns the correct start and end indices for the correctly identified URLs, edge cases such as when the URL has a trailing or leading punctuation mark and returns empty array for strings without valid URLs or for invalid input formats.

toTitleCase:
This function changes any input string so that it adheres to the rules of Chicago Title Case Style. Before this function can proceed to do this, it first makes sure to throw an error if the input is undefined, null or not a string. It then converts the entire input string to lowercase and splits it into separate words. It maps over this string and capitalizes the first and last word, and any word in the input that is not a part of the lowercaseWords list. It then puts the words back together and returns the new string that has been converted to Chicago Title Case Style.

It also includes the test file to validate the function's behavior. It first tests the function with some tests that would return valid, some edge cases such as single letters, all capitalized strings etc. and tests whether the appropriate error is thrown incase an input is invalid

isValid:
This function checks if a given input string is a valid URL. It does so by using the input URL to create a URL object and using the URL constructor to throw an error if the URL is invalid.

It also includes a test file to verify the function's correctness. The test file consists of many examples of URLs that would be considered valid, as well as invalid.

[gabeabrams]

More comments

[gabeabrams]

JSDoc has to be right above the function. here, the constant urlRegex is between the function and its documentation

[gabeabrams]

Put this above so JSDoc isn't separated from function

[gabeabrams]

Need endline

[gabeabrams]

Filename isn't named correctly (must match function name)

[gabeabrams]

Q: how hard would it be to add a feature where the URLs themselves are returned? Like this:

{ start: number, end: number, url: string }[]

[gabeabrams]

I think it'd be good to add a "unit" to the numbers. The unit here is index so, like startIndex and endIndex

[gabeabrams]

Only https and http

[gabeabrams]

One item per line

return (
  (index === 0 || index === words.length - 1 || !lowerCaseWords.includes(word))
    ? `${word.charAt(0).toUpperCase()}${word.slice(1)}`
    : word
);

[gabeabrams]

See comments. Super close!