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loopbackio/loopback-next

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--- lang: en title: 'API docs: graphql.registerresolver' keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI sidebar: lb4_sidebar editurl: https://github.com/loopbackio/loopback-next/tree/master/extensions/graphql permalink: /doc/en/lb4/apidocs.graphql.registerresolver.html --- <!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) &gt; [@loopback/graphql](./graphql.md) &gt; [registerResolver](./graphql.registerresolver.md) ## registerResolver() function Register a GraphQL resolver class **Signature:** ```typescript export declare function registerResolver(ctx: Context, resolverClass: Constructor<object>, nameOrOptions?: string | BindingFromClassOptions): Binding; ``` ## Parameters <table><thead><tr><th> Parameter </th><th> Type </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> ctx </td><td markdown="1"> [Context](./context.context.md) </td><td markdown="1"> Context object </td></tr> <tr><td markdown="1"> resolverClass </td><td markdown="1"> [Constructor](./context.constructor.md)<!-- -->&lt;object&gt; </td><td markdown="1"> Resolver class </td></tr> <tr><td markdown="1"> nameOrOptions </td><td markdown="1"> string \| [BindingFromClassOptions](./context.bindingfromclassoptions.md) </td><td markdown="1"> _(Optional)_ Resolver name or binding options </td></tr> </tbody></table> **Returns:** [Binding](./context.binding.md)