util.format

format.js

/**
 * Format a string with values from the provided object.
 *
 * @param {string} template - String with {} denoted keys. (See example)
 * @param {object} args - Key/value pairs matching the holes in the template.
 * @return {string}
 *
 * @example
 * format('This is a {language} ({abbr}) codebase.', {
 *   language: 'JavaScript',
 *   abbr: 'JS'
 * });
 * // 'This is a JavaScript (JS) codebase.'
 */
function format(template, args) {
  return template.replace(/{([^}]*)}/g, function(match, key) {
    return args[key] || match;
  });
}

module.exports.format = format;