# `zappier-account-balance/books`

**Package:** `zappier-account-balance`  
**Source:** `packages/zappier-account-balance/src/books.js`  
**Lines:** 90

## What this module is

Implementation module in `zappier-account-balance`. The tables below are extracted from the source (signatures + JSDoc).

## Exports

`AccountBooks`, `handle`

## Types / interfaces / classes

| Kind | Name |
|------|------|
| class | `AccountBooks` |

## Functions

| Name | Parameters | Param types (JSDoc) | Returns | Calls (same file / helpers) |
|------|------------|---------------------|---------|-----------------------------|
| `handle` | `subject, payload, books` | — | `unknown` | see Call graph |
| `match` | `rows` | — | `unknown` | see Call graph |

## Methods (class / object)

| Name | Parameters |
|------|------------|
| `constructor` | `(none)` |
| `prepaidCents` | `customerId` |
| `adjust` | `{ customerId, cents, reason, agent, kind = 'credit' }` |
| `recordUsage` | `entry` |
| `recordPayment` | `entry` |
| `statement` | `customerId` |

## What it imports / requires

_No imports detected._

## Call graph (identifiers invoked)

`constructor`, `prepaidCents`, `adjust`, `trunc`, `now`, `toString`, `random`, `slice`, `toISOString`, `unshift`, `recordUsage`, `recordPayment`, `statement`, `filter`, `match`, `handle`, `endsWith`

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`.