<!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) > [firefish-js](./firefish-js.md) > [api](./firefish-js.api.md) > [APIClient](./firefish-js.api.apiclient.md) > [(constructor)](./firefish-js.api.apiclient._constructor_.md) ## api.APIClient.(constructor) Constructs a new instance of the `APIClient` class **Signature:** ```typescript constructor(opts: { origin: APIClient["origin"]; credential?: APIClient["credential"]; fetch?: APIClient["fetch"] | null | undefined; }); ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | opts | { origin: [APIClient](./firefish-js.api.apiclient.md)<!-- -->\["origin"\]; credential?: [APIClient](./firefish-js.api.apiclient.md)<!-- -->\["credential"\]; fetch?: [APIClient](./firefish-js.api.apiclient.md)<!-- -->\["fetch"\] \| null \| undefined; } | |