--- lang: en title: 'API docs: authentication-passport.strategyadapter' keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI sidebar: lb4_sidebar editurl: https://github.com/loopbackio/loopback-next/tree/master/extensions/authentication-passport permalink: /doc/en/lb4/apidocs.authentication-passport.strategyadapter.html --- [Home](./index.md) > [@loopback/authentication-passport](./authentication-passport.md) > [StrategyAdapter](./authentication-passport.strategyadapter.md) ## StrategyAdapter class Adapter class to invoke passport-strategy 1. provides express dependencies to the passport strategies 2. provides shimming of requests for passport authentication 3. provides life-cycle similar to express to the passport-strategy 4. provides state methods to the strategy instance see: https://github.com/jaredhanson/passport **Signature:** ```typescript export declare class StrategyAdapter implements AuthenticationStrategy ``` **Implements:** [AuthenticationStrategy](./authentication.authenticationstrategy.md) ## Constructors
Constructor Modifiers Description
[(constructor)(strategy, name, userProfileFactory)](./authentication-passport.strategyadapter._constructor_.md) Constructs a new instance of the `StrategyAdapter` class
## Properties
Property Modifiers Type Description
[name](./authentication-passport.strategyadapter.name.md) `readonly` string
## Methods
Method Modifiers Description
[authenticate(request, options)](./authentication-passport.strategyadapter.authenticate.md) The function to invoke the contained passport strategy. 1. Create an instance of the strategy 2. add success and failure state handlers 3. authenticate using the strategy