How to use the uglify-js-papandreou.AST_Directive function in uglify-js-papandreou

from: this,
                                    node: comment,
                                    to: {
                                        url: matchSourceUrlOrSourceMappingUrl[2]
                                    }
                                }));
                            }
                            seenComments.push(comment);
                        }
                    }, this);
                }
            }, this);

            // Detect global 'use strict' directives
            if (parentNode === this.parseTree &&
                node instanceof uglifyJs.AST_Directive &&
                node.value === 'use strict') {
                this.strict = true;
            }

            if (node instanceof uglifyJs.AST_SimpleStatement &&
                node.body instanceof uglifyJs.AST_Call &&
                node.body.expression instanceof uglifyJs.AST_Dot &&
                node.body.expression.property === 'config' &&
                node.body.expression.expression instanceof uglifyJs.AST_SymbolRef &&
                node.body.args[0] instanceof uglifyJs.AST_Object &&
                (node.body.expression.expression.name === 'require' || node.body.expression.expression.name === 'requirejs')) {

                outgoingRelations.push(new AssetGraph.JavaScriptRequireJsConfig({
                    from: this,
                    node: node.body.args[0],
                    parentNode: node.body,