Function peek

src/utils/bash/bashParser.ts:162–164

(L: Lexer, off = 0)

}

function peek(L: Lexer, off = 0): string {
  return L.i + off < L.len ? L.src[L.i + off]! : ''
}

function byteAt(L: Lexer, charIdx: number): number {
  // Fast path: ASCII-only prefix means char idx == byte idx