refactor test import path, remove redundancy index.js

[paranoidjk]

ref: https://github.com/react-component/tree-select/issues/62

踩了个坑，nodejs 读目录会优先尝试 pkg.main, 失败才会 fallback 到 index.js

https://github.com/nodejs/node/blob/master/lib/module.js#L115

所以用例里面 import TreeSelect from '..'; 会优先引用到 lib。

cc @react-component/admin

• [x] tree-select

[yesmeck]

index.js 原来是给这里用的 https://github.com/react-component/rc-tools/blob/f162f2858e9008616fb344478cd44332cffc77d7/lib/getWebpackCommonConfig.js#L25

[paranoidjk]

其实就是为了给 example 或者 test 里面 import Foo from 'rc-foo' 来做 alias 的...

@yesmeck 默认 alias 做一个 fallback ， 先取 /index.js , 再取 /src/index.js 吧

[paranoidjk]

@yesmeck 或者统一用 pkg.config.entry? https://github.com/react-component/react-component.github.io/issues/14

[paranoidjk]

https://github.com/react-component/rc-tools/commit/c705b6dc1a5fa963b9d28717b23167a3463f2029

[paranoidjk]

Goal

• rc-component maintainer wirte import path just like the user's way in example demo.
• but make it actually use the src file

Proposal

import { foo } from 'rc-component'; // will redirect to import { foo } from 'rc-component/index.js' or import { foo } from 'rc-component/src/index.js'

import foo from 'rc-component/lib/foo'; // will redirect to import foo from 'rc-component/src/foo.js' 

done in https://github.com/react-component/rc-tools/compare/c1a01a5ebc603c071dec50031d674f7694cb7d1a...53592b714542ba014c3c23f09ca686a1af0506a2

[paranoidjk]

对于 ts 的项目，没有 /index.js, 只有 /src/index.tsx 这种情况下 alias 到 src/index.tsx 是不行的，因为 ts 不能当 webpack entry。

直接 src/index.js 也不行， 因为 compile to lib 和 es 的时候会出问题

@yesmeck 有空处理下这个么？

[paranoidjk]

我最近没空....

可以用这个库做例子 https://github.com/react-component/m-pull-to-refresh

https://github.com/react-component/m-pull-to-refresh/blob/master/examples/base.js#L2 这个改掉就会出问题

cc @warmhug