---
url: /api/reference/wxt/utils/storage/classes/MigrationError.md
---

[API](../../../../packages.md) / [wxt/utils/storage](../index.md) / MigrationError

# Class: MigrationError

Source: packages/storage/dist/index.d.mts:251

## Contents

* [Extends](#extends)
* [Constructors](#constructors)
  * [Constructor](#constructor)
* [Properties](#properties)
  * [cause?](#cause)
  * [key](#key)
  * [message](#message)
  * [name](#name)
  * [stack?](#stack)
  * [version](#version)
  * [stackTraceLimit](#stacktracelimit)
* [Methods](#methods)
  * [captureStackTrace()](#capturestacktrace)
  * [isError()](#iserror)
  * [prepareStackTrace()](#preparestacktrace)

## Extends

* `Error`

## Constructors

### Constructor

> **new MigrationError**(`key`, `version`, `options?`): `MigrationError`

Source: packages/storage/dist/index.d.mts:254

#### Parameters

##### key

`string`

##### version

`number`

##### options?

`ErrorOptions`

#### Returns

`MigrationError`

#### Overrides

`Error.constructor`

## Properties

### cause?

> `optional` **cause?**: `unknown`

Source: node\_modules/.bun/typescript@6.0.3/node\_modules/typescript/lib/lib.es2022.error.d.ts:24

#### Inherited from

`Error.cause`

***

### key

> **key**: `string`

Source: packages/storage/dist/index.d.mts:252

***

### message

> **message**: `string`

Source: node\_modules/.bun/typescript@6.0.3/node\_modules/typescript/lib/lib.es5.d.ts:1075

#### Inherited from

`Error.message`

***

### name

> **name**: `string`

Source: node\_modules/.bun/typescript@6.0.3/node\_modules/typescript/lib/lib.es5.d.ts:1074

#### Inherited from

`Error.name`

***

### stack?

> `optional` **stack?**: `string`

Source: node\_modules/.bun/typescript@6.0.3/node\_modules/typescript/lib/lib.es5.d.ts:1076

#### Inherited from

`Error.stack`

***

### version

> **version**: `number`

Source: packages/storage/dist/index.d.mts:253

***

### stackTraceLimit

> `static` **stackTraceLimit**: `number`

Source: node\_modules/.bun/@types+node@22.20.1/node\_modules/@types/node/globals.d.ts:68

The `Error.stackTraceLimit` property specifies the number of stack frames
collected by a stack trace (whether generated by `new Error().stack` or
`Error.captureStackTrace(obj)`).

The default value is `10` but may be set to any valid JavaScript number. Changes
will affect any stack trace captured *after* the value has been changed.

If set to a non-number value, or set to a negative number, stack traces will
not capture any frames.

#### Inherited from

`Error.stackTraceLimit`

## Methods

### captureStackTrace()

> `static` **captureStackTrace**(`targetObject`, `constructorOpt?`): `void`

Source: node\_modules/.bun/@types+node@22.20.1/node\_modules/@types/node/globals.d.ts:52

Creates a `.stack` property on `targetObject`, which when accessed returns
a string representing the location in the code at which
`Error.captureStackTrace()` was called.

```js
const myObject = {};
Error.captureStackTrace(myObject);
myObject.stack;  // Similar to `new Error().stack`
```

The first line of the trace will be prefixed with
`${myObject.name}: ${myObject.message}`.

The optional `constructorOpt` argument accepts a function. If given, all frames
above `constructorOpt`, including `constructorOpt`, will be omitted from the
generated stack trace.

The `constructorOpt` argument is useful for hiding implementation
details of error generation from the user. For instance:

```js
function a() {
  b();
}

function b() {
  c();
}

function c() {
  // Create an error without stack trace to avoid calculating the stack trace twice.
  const { stackTraceLimit } = Error;
  Error.stackTraceLimit = 0;
  const error = new Error();
  Error.stackTraceLimit = stackTraceLimit;

  // Capture the stack trace above function b
  Error.captureStackTrace(error, b); // Neither function c, nor b is included in the stack trace
  throw error;
}

a();
```

#### Parameters

##### targetObject

`object`

##### constructorOpt?

`Function`

#### Returns

`void`

#### Inherited from

`Error.captureStackTrace`

***

### isError()

> `static` **isError**(`error`): `error is Error`

Source: node\_modules/.bun/typescript@6.0.3/node\_modules/typescript/lib/lib.esnext.error.d.ts:21

Indicates whether the argument provided is a built-in Error instance or not.

#### Parameters

##### error

`unknown`

#### Returns

`error is Error`

#### Inherited from

`Error.isError`

***

### prepareStackTrace()

> `static` **prepareStackTrace**(`err`, `stackTraces`): `any`

Source: node\_modules/.bun/@types+node@22.20.1/node\_modules/@types/node/globals.d.ts:56

#### Parameters

##### err

`Error`

##### stackTraces

`CallSite`\[]

#### Returns

`any`

#### See

https://v8.dev/docs/stack-trace-api#customizing-stack-traces

#### Inherited from

`Error.prepareStackTrace`

***

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