# core/registries/producer.registry.ts

> 13 lines of code and 3 definitions.

Tree: GovLab Quality
Language: typescript
Layer: infrastructure
Canonical: https://banes-lab.com/anatomy/quality#file-quality-core-registries-producer-registry-ts
Source text: https://banes-lab.com/source/quality/core/registries/producer.registry.ts.txt

Listed in [core/registries](https://banes-lab.com/api/source/quality/core/registries.md), after [core/registries/formatter.registry.ts](https://banes-lab.com/source/quality/core/registries/formatter.registry.ts.md) and before [core/registries/section.registry.ts](https://banes-lab.com/source/quality/core/registries/section.registry.ts.md).

## Definitions

- `registeredProducers` (lexical_declaration, line 14, exported)
- `defineProducer` (lexical_declaration, line 6, exported)
- `PRODUCERS` (lexical_declaration, line 4)

## Contained in

- [core/registries](https://banes-lab.com/anatomy/quality/folder-quality-core-registries.md)

## Uses

- [configuration/strings/catalog.strings.ts](https://banes-lab.com/source/quality/configuration/strings/catalog.strings.ts.md)

## Used by

- [core/loaders/producer.loader.ts](https://banes-lab.com/source/quality/core/loaders/producer.loader.ts.md)

## Linked from

- [configuration/strings](https://banes-lab.com/anatomy/quality/folder-quality-configuration-strings.md)
- [core/loaders](https://banes-lab.com/anatomy/quality/folder-quality-core-loaders.md)

## Source

```typescript
import type { CatalogProducer } from "#types/catalog.types";
import { duplicateProducer } from "#configuration/strings/catalog.strings";

const PRODUCERS = new Map<string, CatalogProducer>();

export const defineProducer = function defineProducer(producer: CatalogProducer): CatalogProducer {
    if (PRODUCERS.has(producer.name)) {
        throw new Error(duplicateProducer(producer.name));
    }
    PRODUCERS.set(producer.name, producer);
    return producer;
};

export const registeredProducers = function registeredProducers(): CatalogProducer[] {
    return [...PRODUCERS.values()].toSorted((a, b) => a.name.localeCompare(b.name));
};
```