@loopback/docs/site/apidocs/context.binding.toinjectable.md

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---
lang: en
title: 'API docs: context.binding.toinjectable'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/context
permalink: /doc/en/lb4/apidocs.context.binding.toinjectable.html
---

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [Binding](./context.binding.md) &gt; [toInjectable](./context.binding.toinjectable.md)

## Binding.toInjectable() method

Bind to a class optionally decorated with `@injectable`<!-- -->. Based on the introspection of the class, it calls `toClass/toProvider/toDynamicValue` internally. The current binding key will be preserved (not being overridden by the key inferred from the class or options).

This is similar to [createBindingFromClass()](./context.createbindingfromclass.md) but applies to an existing binding.

**Signature:**

```typescript
toInjectable(ctor: DynamicValueProviderClass<T> | Constructor<T | Provider<T>>): this;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

ctor


</td><td markdown="1">

[DynamicValueProviderClass](./context.dynamicvalueproviderclass.md)<!-- -->&lt;T&gt; \| [Constructor](./context.constructor.md)<!-- -->&lt;T \| [Provider](./context.provider.md)<!-- -->&lt;T&gt;&gt;


</td><td markdown="1">

A class decorated with `@injectable`<!-- -->.


</td></tr>
</tbody></table>

**Returns:**

this

## Example


```ts
@injectable({scope: BindingScope.SINGLETON, tags: {service: 'MyService}})
class MyService {
  // ...
}

const ctx = new Context();
ctx.bind('services.MyService').toInjectable(MyService);
```