rollup-plugin-uglify: Error transforming bundle with 'uglify' plugin

I have an Angular 2 sample app that’s bundle up with Rollup, but it throws an error when using this plugin. It says

Error transforming bundle with ‘uglify’ plugin: SyntaxError: Unexpected token: name (AppComponent).

This is how my rollup.config.s looks like

import rollup from 'rollup'
import nodeResolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs';
import uglify from 'rollup-plugin-uglify';

export default {
    entry: 'dist/app/main.js',
    dest: 'dist/build.js', // output a single application bundle
    sourceMap: false,
    format: 'iife',
    plugins: [
        nodeResolve({ jsnext: true, module: true }),
        commonjs({
            namedExports: {
                // left-hand side can be an absolute path, a path 
                // relative to the current directory, or the name 
                // of a module in node_modules 
                'node_modules/primeng/primeng.js': ['DialogModule']
            },
            include: ['node_modules/rxjs/**', 'node_modules/primeng/**']
        }),
        uglify()
    ]
}