Custom Stack Trace Reformatting via Error.prepareStackTrace Introspection

function captureCallsiteAudit() {
  const originalPrepare = Error.prepareStackTrace;
  Error.prepareStackTrace = (_, stack) => {
    return stack.map((site) => ({
      file: site.getFileName(),
      line: site.getLineNumber(),
      fn: site.getFunctionName() || '<anonymous>',
      isNative: site.isNative()
    }));
  };
  
  const err = new Error();
  Error.captureStackTrace(err, captureCallsiteAudit);
  const stackFrames = err.stack;
  Error.prepareStackTrace = originalPrepare;
  return stackFrames;
}
 
const auditLog = captureCallsiteAudit();