[keichi]

Problem

A greedy string advanced offset with while(buffer.length > offset++);, which exits with offset === buffer.length + 1. Anything after the string (e.g. saveOffset) sees a wrong offset.

Repro

new Parser().string("s", { greedy: true }).saveOffset("o").parse(Buffer.from("ab"));
// { s: "ab", o: 3 }  -- expected o: 2

Fix

Replace the loop with offset = buffer.length;. The decoded value (subarray(start, offset)) is unchanged. Added a regression test in test/primitive_parser.ts.