import { getTraceData } from '@sentry/core';

const SENTRY_RPC_META_KEY = "__sentry_rpc_meta__";
function isSentryRpcMeta(value) {
  if (typeof value !== "object" || value === null || !(SENTRY_RPC_META_KEY in value)) {
    return false;
  }
  const sentry = value.__sentry_rpc_meta__;
  return typeof sentry === "object" && sentry !== null;
}
function appendRpcMeta(args) {
  const traceData = getTraceData();
  if (!traceData["sentry-trace"]) {
    return args;
  }
  return [...args, { [SENTRY_RPC_META_KEY]: traceData }];
}
function extractRpcMeta(args) {
  if (args.length === 0) {
    return { args };
  }
  const last = args[args.length - 1];
  if (isSentryRpcMeta(last)) {
    return {
      args: args.slice(0, -1),
      rpcMeta: last.__sentry_rpc_meta__
    };
  }
  return { args };
}

export { appendRpcMeta, extractRpcMeta };
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