to-js.js

var fs = require('fs');
var path = require('path');
var parse = require('csv-parse');
var eol = require('eol');

module.exports = function(csvPath, localesPath, ignoreJshint) {
  var csv = fs.readFileSync(csvPath, 'utf8');

  parse(csv, function(err, lines) {
    var i, columnIndex;
    var locales = lines.shift().slice(1);

    var objs = [];
    for (i in locales) {
      objs.push({});
    }

    function recurse(keySections, obj, value) {
      var key = keySections[0];
      if (keySections.length > 1) {
        if (!obj[key]) {
          obj[key] = {};
        }
        recurse(keySections.slice(1), obj[key], value);
      } else {
        obj[key] = value;
      }
    }

    for (i in lines) {
      var line = lines[i];
      var key = line.shift();
      var keySections = key.split('.');
      for (columnIndex in line) {
        var obj = objs[columnIndex];
        var value = line[columnIndex];
        recurse(keySections, obj, value);
      }
    }

    for (columnIndex in locales) {
      var locale = locales[columnIndex];
      var localePath = path.join(localesPath, locale);
      if (!fs.existsSync(localePath)) {
        fs.mkdirSync(localePath);
      }
      var filePath = path.join(localePath,  'translations.js');
      var jsonString = JSON.stringify(objs[columnIndex], null, 2);
      var string = 'export default ' + jsonString + ';\n';
      if (ignoreJshint) {
        string = '/* jshint ignore:start */\n\n' + string + '\n/* jshint ignore:end */\n';
      }
      string = eol.auto(string);
      fs.writeFileSync(filePath, string);
    }
  });
};