yaml conversion JS

#
# use npm install js-yaml

const fs = require('fs')
const jsyaml = require('js-yaml')


const mkdirSync = function (dirPath) {
    try {
      fs.mkdirSync(dirPath)
    } catch (err) {
      if (err.code !== 'EEXIST') throw err
    }
} 

function convertData( srcPath, savPath) {

    
    fs.readFile(srcPath, 'utf8', function (err, data) {
        
            if (err) throw err;

            let json = JSON.stringify(jsyaml.load(data),null,2);

            
            //Do your processing, MD5, send a satellite to the moon, etc.
            fs.writeFile (savPath, json, function(err) {
                if (err) throw err;
                console.log('Json complete '+new Date().toTimeString());
            });
        });
}

mkdirSync("www");
mkdirSync("www/assets");
mkdirSync("www/assets/i18n");
convertData("src/assets/i18n/fr.yaml","www/assets/i18n/fr.json");

to launch it from npm install:
"watch:yaml": "watch "npm run build:yaml" src/assets/i18n",
"start": "npm run watch:yaml | npm run yourlaunch",