I’m not sure why this is a “proposal” for other string to int parsers rather than a function the author wrote themselves. It seems rather trivial to implement on top of something like strtol (or whatever your language’s equivalent is).
Imagine you ad a standard library string-to-integer parser that didn't know about minus signs. Sure, you could write your own function that wrapped the parser to allow for negative numbers, but wouldn't it be better if the standard library one did it?
I was operating under an unfounded assumption that the blog post existed instead of the code to do the thing for your particular use case rather than in addition to it, which isn’t entirely fair given we have had no prior interactions and I have not investigated your work at all.