Method astFunctionDeclaration

src/backend/function-node.js:1009–1014

* @desc Parses the abstract syntax tree for to its *named function declaration* * @param {Object} ast - the AST object to parse * @param {Array} retArr - return array string * @returns {Array} the append retArr

(ast, retArr)

   * @returns {Array} the append retArr
   */
  astFunctionDeclaration(ast, retArr) {
    if (this.isChildFunction(ast)) {
      return retArr;
    }
    return this.astFunction(ast, retArr);
  }
  astFunctionExpression(ast, retArr) {
    if (this.isChildFunction(ast)) {
      return retArr;