# `zappier/billing/stripe`

**Package:** `zappier`  
**Source:** `packages/zappier/src/billing/stripe.ts`  
**Lines:** 42

## What this module is

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

## Exports

`METER_EVENT_NAME`, `MeterEventClient`, `computeBillableCents`, `computeDelta`, `reportUsage`

## Types / interfaces / classes

| Kind | Name |
|------|------|
| interface | `MeterEventClient` |

## Functions

| Name | Parameters | Param types (JSDoc) | Returns | Calls (same file / helpers) |
|------|------------|---------------------|---------|-----------------------------|
| `computeBillableCents` | `entries: UsageEntry[], monthlyCreditCents: number` | — | `unknown` | see Call graph |
|  | _Stripe-side dedup key; events with the same identifier are dropped._ | | | |
| `computeDelta` | `billableCents: number, previouslyReportedCents: number` | — | `unknown` | see Call graph |
| `reportUsage` | `client: MeterEventClient,
  stripeCustomerId: string,
  entries: UsageEntry[],
  monthlyCreditCents: number,` | — | `unknown` | see Call graph |

## Methods (class / object)

| Name | Parameters |
|------|------------|
| `createMeterEvent` | `params: {
    eventName: string;
    customerId: string;
    value: string;
    /** Stripe-side dedup key; events with the same identifier are dropped. */
    identifier?: string;
  }` |

## What it imports / requires

- `../usage`

## Call graph (identifiers invoked)

`createMeterEvent`, `computeBillableCents`, `reduce`, `max`, `computeDelta`, `ts`, `reportUsage`

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`.