lib/rules/no-trailing-underscore.js
/**
     * Check if identifier is present inside the allowed option
     *
     * @param {string} identifier name of the node
     * @returns {boolean} true if its is present
     * @private
     */
Check if identifier is present inside the allowed option
@param {string} identifier name of the node
@returns {boolean} true if its is present
@private
Check if identifier is present inside the allowed option @param { string } identifier name of the node @returns { boolean } true if its is present @private
function isAllowed(identifier) {
      return ALLOWED_VARIABLES.some(function(ident) {
        return ident === identifier;
      });
    }
function isAllowed ( identifier ) { return ALLOWED_VARIABLES . some ( function ( ident ) { return ident === identifier ; } ) ; }
Check if identifier is present inside the allowed option
 @param {string} identifier name of the node
 @returns {boolean} true if its is present
 @private
Check if identifier is present inside the allowed option @param { string } identifier name of the node @returns { boolean } true if its is present @private