What am I getting wrong?

[tobychidi]

I am new to using magic-regexp and regexp in general. Am I misusing the API or is there a bug. Simple rules I try to define don't work as expected. Like this one for timeString.

const timeRegexp = createRegExp(
   charIn("01")
      .optionally()
      .before(charIn("0-9"))
      .or(exactly("2").and(charIn("0-3")))
      .and(exactly(":"))
      .and(charIn("0-5").and(charIn("0-9")))
      .at.lineStart()
)

/^([01]?[0-9]|2[0-3]):[0-5][0-9]$/): is what I am trying to implement.

The stings I pass keep failing the test.

This is another one. oneOrMore(charIn("A-Za-z0-9").or(" ")). Won't allow strings unless there is a space. But I actually specified or.

Help and clarification would be apprecieted. Going through the docs did not help me figure out the problem.