babel-plugin-default-import-checker

Babel 6 plugin to check if your using default imports and namespace imports on local modules that exports (or not) default bindings.

This plugin only work on module transformed with Babel, it won't show any error for imports on node_modules modules.

Usage

``
npm install --save babel-plugin-default-import-checker
`

then in you .babelrc file

`javascript
{
"plugins": [
"babel-plugin-default-import-checker"
]
}
`

or just run a babel-cli command with a --plugins option

`
babel --plugins babel-plugin-default-import-checker src --out-dir lib
`

What it does

$3

If you define the following module

`javascript
export function hello() {
return 'Hello World!';
}
`

and use import it from elsewhere like it's a default binding

`javascript
import Hello from './hello';

const message = Hello();

console.log(message);
`

the babel-plugin-default-import-checker will display the following error

`
ERROR : module 'example/index.js' try to use default binding
| of module 'example/hello.js' at line [1] but there is none.
| 1 > import Hello from './hello';
| You should add a default binding to 'example/hello.js'
| or use the following import :
| 1 > import * as Hello from './hello';
`

$3

if you define the following module

`javascript
export default function hi() {
return 'Hello World!';
}
`

and use import it using namespace import

`javascript
import * as Hi from './hi';

console.log(Hi.hi());
`

the babel-plugin-default-import-checker will display a warning unless there is other exported functions in the imported module.

`
WARNING : module 'example/index.js' is using namespace import of module 'example/hi.js'
| at line [1] but this module has default export. Maybe it's an error.
| 1 > import * as Hi from './hi';
``