Elasticsearch interface in typescript

I need a nodejs class in typescript to interact with elastic search.
Requirements:
1- package.json: please make sure to include all needed libraries.
2- app.ts please check the attached file:
– Init client with args, you must use “elasticsearch” library
– Insert data with the sent language, take synonyms into account
– Retrieve externalIds related to the data found on the items based on language and query in args, you have to consider synonyms, idioms, tolerance for typos, … supported languages are English and German
3- unit test file