Text Recognizer Middleware
The Text Recognizer Middleware library is a compliment to the Text Recognizer dialog prompts. These middleware components can be used to identify certain text sequences that you might want to alter prior to appearing on the chat window. For example, turning a URL into an actual link, or turning a hashtag into a link that points to a Twitter search.
Installing
npm install @botbuildercommunity/text-recognizer-middleware --save
Usage
All middleware is created and used in the same way. For example, for social media recognition, import the SocialMediaRecognizer class from the package, and add it to your bot adapter:
import { SocialMediaRecognizer } from "@botbuildercommunity/text-recognizer-middleware";
adapter.use(new SocialMediaRecognizer());
When used, the turnState on the TurnContext will have a property named mentionEntities, which will be an array of strings with the @ syntax elements.
Supported middleware classes include:
| Class | Property/Properties on turnState
|
|---|---|
EmailRecognizer |
context.turnState.get("emailEntities") |
URLRecognizer |
context.turnState.get("urlEntities") |
PhoneRecognizer |
context.turnState.get("phoneNumberEntities") |
SocialMediaRecognizer |
context.turnState.get("mentionEntities") or context.turnState.get("hastagEntities")
|
In each case, the turnState of the TurnContext contains an array with the various recognized entities.