---
jsApi: true
title: "[I] Tracer"

---
## Methods

### sub

```ts
sub(subarea): Tracer
```

#### Parameters

| Parameter | Type |
| :------ | :------ |
| `subarea` | `string` |

#### Returns

[`Tracer`](Interface.Tracer.md)

***

### trace

```ts
trace(
  area,
  message,
  target?): void
```

Trace

#### Parameters

| Parameter | Type | Description |
| :------ | :------ | :------ |
| `area` | `string` |  |
| `message` | `string` |  |
| `target`? | [`DiagnosticTarget`](Type.DiagnosticTarget.md) | - |

#### Returns

`void`
