Add support for flow type imports

[ganemone]

This adds support for automatically importing flow types

Fixes #12

[wangtao0101]

@ganemone The code seems has been formatted in this commit by prettier

[ganemone]

@wangtao0101 Ok - I updated the PR to remove the formatting changes

[ganemone]

@wangtao0101 thoughts on getting this merged? Happy to make any more updates you ask for

[wangtao0101]

@ganemone I think we should not check 'src/index' for main entry, maybe you can scan both mainfile in packagejson and 'src/index'

[ganemone]

@wangtao0101 I do check both src/index.js and package.json main. This is actually the way node.js will handle module resolution. See https://nodejs.org/api/modules.html#modules_all_together

[albertywu]

Curious what the status is of this PR? I was hunting for a vscode plugin that does auto imports of flow types and ran into this!

[Skurkify]

I'm also looking for auto import of flow types. This plugin is already great and having the ability to import Flow types would really help me out.