A simple script to create simple entities for Dialogflow from json source

entities.creator.js

/**
 * Waiting input:
 * @param : json filename
 * @param : json key for entities
 */
var fs = require('fs');
//var file = fs.readFileSync('data/' + argv.file, 'utf8');
const file = process.argv[2];
const key = process.argv[3];


const reduce = function reduce(data, key){
    let res = [];
    let map = {};
    data.forEach(element => {
        if(!map[element.name]){
            map[element.name] = true;        
            res.push({
                value: element.name,
                synonyms: [
                    element.name
                ]
            });
        }        
    });
    return res;
}
// load json file
let rawdata = fs.readFileSync(file);  
let json = JSON.parse(rawdata);  

let result = reduce(json, key);
console.log(result);

// write file 
fs.writeFileSync('entities-'+key+'.json', JSON.stringify(result));