node/tools/eslint/node_modules/is-alphabetical/index.js

'use strict';

module.exports = alphabetical;

/* Check if the given character code, or the character
 * code at the first character, is alphabetical. */
function alphabetical(character) {
  var code = typeof character === 'string' ?
    character.charCodeAt(0) : character;

  return (code >= 97 && code <= 122) || /* a-z */
    (code >= 65 && code <= 90); /* A-Z */
}