@loopback/docs

--- lang: en title: 'API docs: context.invocationcontext' keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI sidebar: lb4_sidebar editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/context permalink: /doc/en/lb4/apidocs.context.invocationcontext.html ---  [Home](./index.md) > [@loopback/context](./context.md) > [InvocationContext](./context.invocationcontext.md) ## InvocationContext class InvocationContext represents the context to invoke interceptors for a method. The context can be used to access metadata about the invocation as well as other dependencies. **Signature:** ```typescript export declare class InvocationContext extends Context ``` **Extends:** [Context](./context.context.md) ## Constructors <table><thead><tr><th> Constructor </th><th> Modifiers </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [(constructor)(parent, target, methodName, args, source)](./context.invocationcontext._constructor_.md) </td><td markdown="1"> </td><td markdown="1"> Construct a new instance of `InvocationContext` </td></tr> </tbody></table> ## Properties <table><thead><tr><th> Property </th><th> Modifiers </th><th> Type </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [args](./context.invocationcontext.args.md) </td><td markdown="1"> `readonly` </td><td markdown="1"> [InvocationArgs](./context.invocationargs.md) </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [description](./context.invocationcontext.description.md) </td><td markdown="1"> `readonly` </td><td markdown="1"> string </td><td markdown="1"> Description of the invocation </td></tr> <tr><td markdown="1"> [methodName](./context.invocationcontext.methodname.md) </td><td markdown="1"> `readonly` </td><td markdown="1"> string </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [source?](./context.invocationcontext.source.md) </td><td markdown="1"> `readonly` </td><td markdown="1"> [InvocationSource](./context.invocationsource.md)<unknown> \| undefined </td><td markdown="1"> _(Optional)_ </td></tr> <tr><td markdown="1"> [target](./context.invocationcontext.target.md) </td><td markdown="1"> `readonly` </td><td markdown="1"> object </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [targetClass](./context.invocationcontext.targetclass.md) </td><td markdown="1"> `readonly` </td><td markdown="1"> Function </td><td markdown="1"> The target class, such as `OrderController` </td></tr> <tr><td markdown="1"> [targetName](./context.invocationcontext.targetname.md) </td><td markdown="1"> `readonly` </td><td markdown="1"> string </td><td markdown="1"> The target name, such as `OrderController.prototype.cancelOrder` </td></tr> </tbody></table> ## Methods <table><thead><tr><th> Method </th><th> Modifiers </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [assertMethodExists()](./context.invocationcontext.assertmethodexists.md) </td><td markdown="1"> </td><td markdown="1"> Assert the method exists on the target. An error will be thrown if otherwise. </td></tr> <tr><td markdown="1"> [invokeTargetMethod(options)](./context.invocationcontext.invoketargetmethod.md) </td><td markdown="1"> </td><td markdown="1"> Invoke the target method with the given context </td></tr> <tr><td markdown="1"> [toString()](./context.invocationcontext.tostring.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> </tbody></table>