[WIP] Update to Babel 7

[biilmann]

This updates to Babel 7 and webpack 4

[leonardodino]

based on this pool maybe we must update to @babe/core and other scoped packages?

it's seems to be the way forward on Babel 7. I even have to install it as a peer dependency, right now.

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dependency error using yarn@1.5.1 & netlify-lambda@1.0.0-babel-7-beta.

expand log

Building functions
Hash: f1fb444fa034b7754791
Version: webpack 4.2.0
Time: 223ms
Built at: 2018-3-27 01:54:33
   Asset      Size  Chunks  Chunk Names
index.js  1.53 KiB       0  index
Entrypoint index = index.js
   [0] ./index.js 959 bytes {0} [built] [failed] [1 error]

ERROR in ./index.js
Module build failed: Error: Cannot find module '@babel/core'
    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (./node_modules/babel-loader/lib/transform.js:1:75)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (./node_modules/babel-loader/lib/cache.js:24:17)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)

after yarn add @babel/core problem goes away.

[Saeris]

Yes, you need to use the scoped packages.

Also, you can pass on individually including the following:

• transform-class-properties
• transform-object-assign
• transform-object-rest-spread

And instead go with

• @babel/preset-stage-3

Which includes class properties and rest-spread. Object-assign is included in preset-env.

Although personally I would go with stage-0, which includes all of the different proposal stages, which covers a wide range of use-cases. Just my two cents.

[leonardodino]

I would advise against using an experimental stage, especially for this kind of stuff. better to have resilient, and documented, standards, users can bypass it via .babelrc anyways.

[Saeris]

Well if you want to do things that way, you will have to include the following deps:

@babel/plugin-proposal-object-rest-spread
@babel/plugin-proposal-class-properties
@babel/plugin-transform-object-assign

[swyxio]

Hi all, we've upgraded to babel 7 officially! thank you for all your patience.