Simple java script

jave code test, REQUIREMENTS, it is a test for a bigger project. It should expose an HTTP REST interface that responds to POST requests on the URL /analyze. When an HTTP client POSTs a JSON object with the string property “text”, the server will compare the content of the provided text field to the list of words previously provided through the same API, and return a JSON response containing an object with two fields: a. The field “value” will contain the word closest to the word provided in the request in terms of total character value, where character values are listed as a=1, b=2 and so on. b. The field “lexical” will contain the word closest to the word provided in the request in terms of lexical closeness - i.e. that word that sorts lexically closest to the provided request. The server will store any word submitted in a local file, so it can be compared against future requests, even across server restarts. If no words are found to match against (as in the first request), the server will return null for both response fields.