This is a middleware plugin for the Botkit part of the Microsoft Bot framework.

The plugin uses a local, private model via NLP.js to extract:

• Input classifications
• Intents for the given input
• The sentiment of the input
• Entities in the input (see the note below on entity analysis)
• Answers to the input, to allow building Question and Answer bots

Each one can be added individually to the bot, but they can all share the same bot model to reduce memory consumption.

To add the middleware first await the build of the NlpjsEngine, then instantiate the components you wish to add. Finally, add the components to the required adapters.

Note that you will need a built model file to drive the NLP, see this example for how to build the required file.

const { NlpjsEngine, Answer, IntentAnalysis, EntityAnalysis, LanguageAnalysis } = require('botbuilder-nlpjs');
// Other setup
NlpjsEngine.build({ languages: ['en'], forceNER: true }, path.join(__dirname, 'features', 'private.json')).then(
  nlpEngine => {
    // Note that there is nothing special about using the Slack adapter
    const adapter = new SlackAdapter({/* Slack setup options */});

    adapter.use(new Answer(nlpEngine));
    adapter.use(new IntentAnalysis(nlpEngine));
    adapter.use(new EntityAnalysis(nlpEngine));
    adapter.use(new LanguageAnalysis(["en", "de"], 3))

    // Final setup and run
  }
);

For the entity analysis to work correctly the NlpjsEngine must be built using the setting forceNER: true, for example:

NlpjsEngine.build(
    { languages: ['en'], forceNER: true },
    path.join(__dirname, 'features', 'private.json')
  ).then(nlpEngine => {
  // Do stuff with the engine
});