This curried function return a function that allows to transform any collection of object towards another collection by using a translation schema

DataMapper.ts

import * as _ from 'lodash';
// This curried function return a function that allows to transform any collection of object towards another collection by using a translation schema
// use it like like
// let extractSomething = DataMapper({ wantedProp:'TargerProperty', wantedProp1: 'target.property'});
// let transformedCollection = extractSomething(dataToTransform)
// or 
// let transformedData = DataMapper(schema, data);
// 
export function DataMapper(schema: any, items?: any): any {
    let _schema = _.clone(schema);
    let transformer = (items) => {
         return _.chain(items)
                        .map((obj) => {
                            return _.mapValues(_schema, (path) => {
                                return _.get(obj, path);
                            });
                        }).value();
    };

    if (items === undefined) {
       return (items) => {
            return transformer(items);
        }
    } else {
        return transformer(items);
    }
}