Now input + returned and expected values are provided

merged

No:

Coordinates can only contain digits ...

Unclear how this is a kata issue. Closing.

Python fork (author is inactive), addressed several issues:

• rewrote the entire test suite from scratch; created a robust test case generator
• resolved this issue

No random tests in Go

My advice is to look into 'type coercion' and while you're at it, 'type conversion' and figure out the difference. It's quite interesting stuff.

how and why does this work ?

Thank you!

If you surround your code with three backticks (```), it will put it in a codeblock, which is far easier readable.

See: https://docs.codewars.com/references/markdown#displaying-code

Added PHP 8.0 support

This also fixes a bug in the solution (see comment on the fork)

Interesting I haven't seen forEach used this way

tests are weak (JS), edge cases like "89,179", "80, 180.0001", "-90,180", etc. should be tested. I've passed with regex that would not work correctly for such edge cases