one/dist/esm/cli/install-error-handlers.mjs

One is a new React Framework that makes Vite serve both native and web.

let userPrepare;
let depth = 0;
const restoreTrail = [];
function defaultFormat(error, stack) {
  const name = error?.name ?? "Error";
  const message = error?.message ?? "";
  const head = `${name}: ${message}`;
  try {
    const lines = stack.map(frame => {
      try {
        return `    at ${frame}`;
      } catch {
        return "    at <frame>";
      }
    });
    return `${head}
${lines.join("\n")}`;
  } catch {
    return head;
  }
}
function guardedPrepare(error, stack) {
  if (depth > 0) return defaultFormat(error, stack);
  if (typeof userPrepare !== "function") return defaultFormat(error, stack);
  depth++;
  try {
    return userPrepare(error, stack);
  } catch {
    return defaultFormat(error, stack);
  } finally {
    depth--;
  }
}
let installed = false;
function installPrepareStackTraceGuard() {
  if (installed) return;
  installed = true;
  const existing = Error.prepareStackTrace;
  if (typeof existing === "function" && existing !== guardedPrepare) {
    userPrepare = existing;
  }
  Object.defineProperty(Error, "prepareStackTrace", {
    configurable: true,
    get() {
      return guardedPrepare;
    },
    set(value) {
      if (value === guardedPrepare) {
        if (restoreTrail.length > 0) {
          userPrepare = restoreTrail.pop();
        }
        return;
      }
      restoreTrail.push(userPrepare);
      userPrepare = typeof value === "function" ? value : void 0;
    }
  });
}
function formatErrorSafely(err) {
  const prevPrepare = Error.prepareStackTrace;
  Error.prepareStackTrace = void 0;
  try {
    if (err instanceof Error) {
      let stack = "";
      try {
        stack = err.stack ?? "";
      } catch {}
      if (stack) return stack;
      const name = err.name || "Error";
      const message = err.message || "";
      return `${name}: ${message}`;
    }
    return String(err);
  } catch {
    try {
      return String(err);
    } catch {
      return "<unprintable error>";
    }
  } finally {
    Error.prepareStackTrace = prevPrepare;
  }
}
function installSafeUncaughtHandler(label) {
  installPrepareStackTraceGuard();
  process.on("uncaughtException", err => {
    try {
      const formatted = formatErrorSafely(err);
      process.stderr.write(`[${label}] uncaught exception
${formatted}
`);
    } catch {}
    process.exit(1);
  });
  process.on("unhandledRejection", reason => {
    try {
      const formatted = formatErrorSafely(reason);
      process.stderr.write(`[${label}] unhandled rejection
${formatted}
`);
    } catch {}
  });
}
export { formatErrorSafely, installPrepareStackTraceGuard, installSafeUncaughtHandler };
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