Javascript library to parse quantities of items

Question

Is there a library that can preform the following transformations?

"5 servings" => {num: 5, name: "servings"}
"five blocks" => {num: 5, name: "blocks"}
"five and a half teasopons of sugar" => {num: 5.5, name: "teaspoons of sugar"}
"four hundred milligrams of iron" => {num: 400, name: "milligrams of iron"}

It would be even better if the unit could be seperated out to.

Answer 1

There is a JavaScript library called nlp_compromise.

nlp_compromise is a cool way to use natural language in javascript.

This is an open source library and its source code is available here. According to your question, this library can detect a number, unit, and noun. Here are below examples that I taken from nlp_compromise documentation:

nlp_compromise = {
  value :{
    number: Number,      //fifty kilometers -> 50
    unit: String,        //fifty km -> km
    unit_name: String,   //fifty km -> kilometer
    measurement: String, //fifty km -> distance
  }
};

You also can get noun from a sentence. Please, take a look full API documentation here.