Logger is not able to match stackLine

[simonihmig]

stackLine was at <program> (test.js:3) in my case., which did not match the regex in https://github.com/jpg0/ohj/blob/master/log.js#L60, and was throwing therefore (see #9)

On first look:

• the regex seems to expect a :lineNumber:columnNumber ending, which was not the case for me
• it seems to use named capture groups, which are a proposed ECMAScript extension, not sure if GraalVM really supports these already?

[jpg0]

The challenge here has been the GraalJS has not stuck with the same format across versions, and also I think I have seen slightly different formatting at points with the same version (possibly based on whether and how it locates the source file).

It should support named capture groups though, pretty sure it has worked!

I regard this parsing part as needed a rewrite though.