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title: "single"
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> **single**\<`T`\>(`cb`): () => `T`

@__PURE__

## Type parameters

• **T**

## Parameters

• **cb**

## Returns

`Function`

### Returns

`T`

## Since

2.0.0.
Creates a singleton object.

## Source

[src/core/ioc/dependency-injection.ts:11](https://github.com/sern-handler/handler/blob/91b3768e376cfe22ec37d8ab44f4e4a4dfe8a1e8/src/core/ioc/dependency-injection.ts#L11)