# `verae-zapier-middleware/debug/trace`

**Package:** `verae-zapier-middleware`  
**Source:** `packages/verae-zapier-middleware/src/debug/trace.js`  
**Lines:** 96

## What this module is

Implementation module in `verae-zapier-middleware`. The tables below are extracted from the source (signatures + JSDoc).

## Exports

`withTrace`, `traceMiddleware`

## Types / interfaces / classes

_None extracted._

## Functions

| Name | Parameters | Param types (JSDoc) | Returns | Calls (same file / helpers) |
|------|------------|---------------------|---------|-----------------------------|
| `withTrace` | `options, fn` | options: `object|(() => T|Promise<T>)`, options.traceId: `string`, options.span: `string`, fn: `() => T|Promise<T>` | `T|Promise<T>` — Return value of `fn`. | see Call graph |
| `traceMiddleware` | `req, res, next` | req: `import('express').Request`, res: `import('express').Response`, next: `import('express').NextFunction` | `void` | see Call graph |

## Methods (class / object)

| Name | Parameters |
|------|------------|
| `withTrace` | `{ traceId, span: `${req.method} ${req.path}` }, (` |

## What it imports / requires

- `./logger.js`
- `./trace-context.js`

## Call graph (identifiers invoked)

`createDebugger`, `id`, `span`, `withTrace`, `async`, `getTraceId`, `getStore`, `generateTraceId`, `run`, `debug`, `callback`, `then`, `import`, `traceMiddleware`, `trim`, `setHeader`, `next`

Each identifier is a call site in this file. Follow the import list to see the defining module; open that module’s MD for parameter and return types.

## Return values (how to read this)

- HTTP route handlers return Express `res.json(...)` bodies (see route docs).
- Zapier `perform` functions return a **single object** (creates) or an **array** (triggers/searches).
- Pricing functions return integer **cents** on `Quote.totalCents`.