tiny translate script

translate.js

'use strict';

let translations = {};

const PLACEHOLDER_EXP = /\{%\s*([^\s%]*)\s*%}/g;

const translate = (phrase, params = {}) => {
  let translation;

  if (!translations.hasOwnProperty(phrase)) {
    if (!__PROD_MODE__) {
      console.warn(`has no translation for "${phrase}"`); // eslint-disable-line no-console
    }
    translation = phrase;
  } else {
    translation = translations[phrase];
  }

  if (PLACEHOLDER_EXP.test(translation)) {
    translation = translation.replace(PLACEHOLDER_EXP, ($0, $1) => {
      if (params.hasOwnProperty($1)) {
        return params[$1];
      }

      if (!__PROD_MODE__) {
        console.error(`undefined translation param "${$1}"`); // eslint-disable-line no-console
      }

      return '';
    });
  }

  return translation;
};

translate.configure = (_translations) => {
  translations = {
    ...translations,
    _translations
  };
};

module.exports = translate;