export function parseJsonc(raw: string): unknown {
  const stripped = stripJsonComments(raw);
  return JSON.parse(stripped);
}

function stripJsonComments(text: string): string {
  let result = "";
  let inString = false;
  let escape = false;
  let inLineComment = false;
  let inBlockComment = false;

  for (let i = 0; i < text.length; i++) {
    const ch = text[i];
    const next = text[i + 1];

    if (inString) {
      result += ch;
      if (escape) {
        escape = false;
      } else if (ch === "\\") {
        escape = true;
      } else if (ch === '"') {
        inString = false;
      }
      continue;
    }

    if (inLineComment) {
      if (ch === "\n") {
        inLineComment = false;
        result += ch;
      }
      continue;
    }

    if (inBlockComment) {
      if (ch === "*" && next === "/") {
        inBlockComment = false;
        i++;
      }
      continue;
    }

    if (ch === '"') {
      inString = true;
      result += ch;
      continue;
    }

    if (ch === "/" && next === "/") {
      inLineComment = true;
      i++;
      continue;
    }

    if (ch === "/" && next === "*") {
      inBlockComment = true;
      i++;
      continue;
    }

    result += ch;
  }

  return result;
}