String parser for step, note we don't do an exact check here, we wait for z
Construct this with the DFA lookup table required.
Static
Readonly
Match a STEP string
The input buffer.
The offset in the input buffer where the string may be.
The end point of the parse which should not be overflowed.
The matching string value or undefined if none matches or the parse fails.
String parser for step, note we don't do an exact check here, we wait for z