Using es6 transpiled classes in Nodejs - node.js

Question

So I have my example classes in my file ContrivedExampleA.es6
export class Person {
constructor(name, age) {
this._name = name;
this._age = age;
}
get name() {
return this._name;
}
get age() {
return this._age;
}
}
export class Greeter {
constructor(person) {
this._person = person;
}
greet() {
return `Hello ${this._person.name}, I believe you are ${this._person.age} years old!`;
}
}
which I compile (successfully), using the following Gulp task:
var gulp = require('gulp');
var browserify = require('browserify');
var babelify = require('babelify');
var source = require('vinyl-source-stream');
gulp.task('build', function () {
return browserify({entries: './src/ContrivedExampleA.es6', extensions: ['.es6'], debug: true})
.transform(babelify)
.bundle()
.pipe(source('example.js'))
.pipe(gulp.dest('build'));
});
So I want to use this code in regular Nodejs land, so I do the following:
"use strict";
var Person = require('./example').Person;
var Greeter = require('./example').Greeter;
var person = new Person("Test Person", 25);
var greeter = new Greeter(person);
console.log(greeter.greet());
However, both Person and Greeter are undefined. I've even tried including transform-es2015-modules-commonjs in my .babelrc file which hasn't helped anything.
What am I doing wrong? and how can I get these transpiled ES6 classes imported into a regular Nodejs file?
EDIT
I also have a .babelrc file which looks like:
{
"presets": ["es2015"],
"plugins": ["transform-es2015-modules-commonjs"]
}

Answer 1

Ignore my previous answer, I was focusing on the wrong thing.
If you want to get the regular ES6 classes imported into a Nodejs file, you could skip the browserify and babelify steps all together, and just use the gulp-babel plugin directly. I would recommend using gulp-rename too.
Your ContrivedExampleA.es6 file would stay the same, but your gulpfile.js would become:
var gulp = require('gulp');
var babel = require('gulp-babel');
var rename = require('gulp-rename');
gulp.task('build', function () {
return gulp.src('./src/ContrivedExampleA.es6')
.pipe(babel({presets: ["es2015"], plugins: ["transform-es2015-modules-commonjs"]}))
.pipe(rename('example.js'))
.pipe(gulp.dest('build'));
});
Note: since you have a .babelrc you could probably skip passing the options to babel.
Then in your node file, you could simply do
"use strict";
var Person = require('./example').Person;
var Greeter = require('./example').Greeter;
var person = new Person("Test Person", 25);
var greeter = new Greeter(person);
console.log(greeter.greet());