22 lines
540 B
Markdown
22 lines
540 B
Markdown
<!-- Do not edit this file. It is automatically generated by API Documenter. -->
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[Home](./index.md) > [firefish-js](./firefish-js.md) > [api](./firefish-js.api.md) > [isAPIError](./firefish-js.api.isapierror.md)
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## api.isAPIError() function
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**Signature:**
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```typescript
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export declare function isAPIError(reason: any): reason is APIError;
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```
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## Parameters
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| Parameter | Type | Description |
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| --- | --- | --- |
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| reason | any | |
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**Returns:**
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reason is [APIError](./firefish-js.api.apierror.md)
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