src/handlebars-helpers.js
function uppercaseFirstLetter(options) {
  const string = options.fn(this);
  return string.charAt(0).toUpperCase() + string.slice(1);
}
function uppercaseFirstLetter(options) {
  const string = options.fn(this);
  return string.charAt(0).toUpperCase() + string.slice(1);
}
function uppercaseFirstLetter ( options ) { const string = options . fn ( this ) ; return string . charAt ( 0 ) . toUpperCase ( ) + string . slice ( 1 ) ; }
Capitalize the first letter of a string
@param {object}      options       - Handlebars options.
@returns {string}                  - Original string with capitalized first letter.
Capitalize the first letter of a string