Updated to babel 7

[vikr01]

This requires airbnb/babel-preset-airbnb#37 to work.

• Updated all babel dependencies
• Fixed all test cases
• Removed testing for babel-preset-es2015 since it's been deprecated in favor or @babel/preset-env

[wolfy1339]

You might need to make a PR for babel-plugin-add-module-exports as well, since it is a devDependency, and also seems to use Babel 6
ref: 59naga/babel-plugin-add-module-exports#65.

[wolfy1339]

Will close #56

[vikr01]

You might need to make a PR for babel-plugin-add-module-exports as well, since it is a devDependency, and also seems to use Babel 6

babel-plugin-add-module-exports is actually not good to use. Import statements will now use .default if it exists. See https://babeljs.io/docs/en/v7-migration-api#export-changes.

I forgot to remove it from the dependencies, but I did remove it from .babelrc.

[Coder-256]

@ljharb Now that airbnb/babel-preset-airbnb#37 has been merged, is this ready too?

[wolfy1339]

They haven't released the changes to npm quite yet.

[ljharb]

I'll update this PR now.

[ljharb]

@vikr01 i'm going to re-add add-module-exports, since .default should still never be exposed to require.

[vikr01]

@ljharb Sure that’s fine. Just to note though, babel’s plugins now expose .default when using require.

[ljharb]

Sure, but just because they're doing the wrong thing doesn't mean we should :-)

[ljharb]

v2.2.0 is released, containing this commit which allows it to work on both babel 6 and 7.

I'm going to keep this PR and update it to become v3, which explicitly will only support babel 7.