babel-preset-tomekf-es2016-node6 v2.0.6

babel-preset-tomekf-es2016-node6

modules, better funcion name support, exponentiation operator and async/await for node 6

• modules: transform-es2015-modules-commonjs
• better function name support: transform-es2015-function-name
• exponentiation operator: transform-exponentiation-operator
• async/await: transform-regenerator, syntax-async-functions

example

• es6 files in ./es6 folder, transpiled to es5 in ./es5 folder
• working surcemaps - source-map-support
• regenerator-runtime/runtime for async/await, full babel-polyfill probably would be too much
• npm run go starts es5 code
• npm run build and npm run watch commands are self-explanatory
• in case of publish, only es5 files will be in the package, no need to install dev dependencies

.babelrc

{
  "comments": false,
  "presets": [
    "tomekf-es2016-node6"
  ],
  "plugins": [
    "transform-runtime"
  ]
}

package.json

{
  "name": "node-6-example",
  "version": "0.0.0",
  "engines": {
    "node": ">=6.8.0"
  },
  "description": "node 6 example",
  "main": "./es5/index.js",
  "repository": "***/***",
  "author": "Tomek Fijoł",
  "license": "MIT",
  "readmeFilename": "README.md",
  "keywords": [ "example" ],
  "files": [
    "es5",
    "*.js"
  ],
  "scripts": {
    "prepublish": "npm run build",
    "build": "babel es6 --out-dir es5 --source-maps",
    "watch": "babel es6 --out-dir es5 --source-maps --watch",
    "go": "node es5/index.js"
  },
  "devDependencies": {
    "babel-cli": "^6.18.0",
    "babel-preset-tomekf-es2016-node6": "^2.0.5",
    "babel-plugin-transform-runtime": "^6.15.0"
  },
  "dependencies": {
    "regenerator-runtime": "^0.9.5",
    "source-map-support": "^0.4.5"
  }
}

./es6/index.js

import 'source-map-support/register';
import 'regenerator-runtime/runtime';

// start your code here

export default class NodeExample {
  constructor(options) {
    this.opts = Object.assign({}, NodeExample.defaults, options);
  }

  methodOne() {
    // ...
  }
}

// es7 features
NodeExample.defaults = {
  optionOne: 2 ** 3,
  optionTwo: [1, 2, 3].includes(2)
};

// async test
async function asyncFun () {
  let value = await Promise
    .resolve(1)
    .then(x => x * 3)
    .then(x => x + 5)
    .then(x => x / 2);

  return value;
}

asyncFun().then(x => console.log(`x: ${x}`));