Stock Monitoring Plugin

This plugin helps you monitor the stock levels in two ways:

1. A dashboard widget that displays variants that have stock level's below their threshold
2. An event is emitted when a variant's stock level drops below a given threshold after each placed order.

Getting started

1. Add the plugin to your vendure-config.ts to expose a productVariantsWithLowStock query in the admin API.

import { StockMonitoringPlugin } from '@pinelab/vendure-plugin-stock-monitoring';plugins: [  StockMonitoringPlugin.init({    globalThreshold: 10,    uiTab: 'My Admin UI Tab',  }),];

The "Low stock" widget is provided as a React Dashboard extension — no Admin UI compilation step is needed.

When you start the server and login, you can find Low stock under the dashboard's add widget button. The widget is only shown to administrators with the ReadCatalog permission.

Caveats

1. This plugin doesn't use the StockLocationStrategy because of performance reasons. Instead, it fetches the stock level for each variant from the database and calculates its absolute stock based on the stockOnHand and stockAllocated fields.
2. Performance: Each allocation or stock-lowering adjustment in StockMovementEvent creates a job that triggers a stock check: get saleable stock, compare with variant threshold, and emit event if variant dropped below threshold. Sales (fulfillments) don't trigger a check, because they lower stockOnHand and stockAllocated by the same amount, so saleable stock doesn't change.
3. Variants that don't track inventory (trackInventory set to FALSE, or INHERIT while the global setting is off) never emit the event and aren't listed in the Low stock widget.