This content originally appeared on DEV Community and was authored by Calin Baenen

A new commit to the ParseJS GitHub repository was made.

It fixes a critical bug related to the output the function returned.

The intended behavior.

parse_string usually returns an array that contains either a length-one-string (char) or symbol.
A symbol is inserted into the returned array IF a symbol is found. - I.e. if you pass the arguments: "test + test", ["test"] two symbols containing the description test will be inserted.
Otherwise, if a valid token isn't found, it will insert the current character

So, all together, if you pass in "test + test", ["test"], you should (and WILL) get [Symbol(test), ' ', '+', ' ', Symbol(test)].

The bug.

The bug is that "ghost" characters would be inserted into the output array if a token candidate didn't match the potential token in the string.

A visual demonstration of the bug.

This is a before and after of the bug fix:

Thanks for your attention!
Cheers!

This content originally appeared on DEV Community and was authored by Calin Baenen

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Calin Baenen | Sciencx (2021-12-13T12:46:12+00:00) ⚠️ CRITICAL update for ParseJS/ParseTS! ⚠️. Retrieved from https://www.scien.cx/2021/12/13/%e2%9a%a0%ef%b8%8f-critical-update-for-parsejs-parsets-%e2%9a%a0%ef%b8%8f/

MLA

" » ⚠️ CRITICAL update for ParseJS/ParseTS! ⚠️." Calin Baenen | Sciencx - Monday December 13, 2021, https://www.scien.cx/2021/12/13/%e2%9a%a0%ef%b8%8f-critical-update-for-parsejs-parsets-%e2%9a%a0%ef%b8%8f/

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Calin Baenen | Sciencx Monday December 13, 2021 » ⚠️ CRITICAL update for ParseJS/ParseTS! ⚠️., viewed ,<https://www.scien.cx/2021/12/13/%e2%9a%a0%ef%b8%8f-critical-update-for-parsejs-parsets-%e2%9a%a0%ef%b8%8f/>

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" » ⚠️ CRITICAL update for ParseJS/ParseTS! ⚠️." Calin Baenen | Sciencx - Accessed . https://www.scien.cx/2021/12/13/%e2%9a%a0%ef%b8%8f-critical-update-for-parsejs-parsets-%e2%9a%a0%ef%b8%8f/

IEEE

" » ⚠️ CRITICAL update for ParseJS/ParseTS! ⚠️." Calin Baenen | Sciencx [Online]. Available: https://www.scien.cx/2021/12/13/%e2%9a%a0%ef%b8%8f-critical-update-for-parsejs-parsets-%e2%9a%a0%ef%b8%8f/. [Accessed: ]

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» ⚠️ CRITICAL update for ParseJS/ParseTS! ⚠️ | Calin Baenen | Sciencx | https://www.scien.cx/2021/12/13/%e2%9a%a0%ef%b8%8f-critical-update-for-parsejs-parsets-%e2%9a%a0%ef%b8%8f/ |

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