babel-plugin-transform-isnil

babel-plugin-transform-isNil

Installation

$ npm install --save babel-plugin-transform-isnil

Example

In

if (foo.isNil) {
  console.log('foo is null or undefined');
}

Out

if (foo === null || foo === undefined) {
  console.log('foo is null or undefined');
}

In

if (hoge.poge.isNil && foo.bar.isNil) {
  console.log('hoge.poge and foo.bar is null or undefined');
}

Out

if ((hoge.poge === null || hoge.poge === undefined) && (foo.bar === null || foo.bar === undefined)) {
  console.log('hoge.poge and foo.bar is null or undefined');
}

In

if (hoge.poge().isNil) {
  console.log('hoge.poge and foo.bar is null or undefined');
}

Out

if (hoge.poge() === null || hoge.poge() === undefined) {
  console.log('hoge.poge and foo.bar is null or undefined');
}

In

if (hoge.poge(hoge).isNil) {
  console.log('hoge.poge and foo.bar is null or undefined');
}

Out

if (hoge.poge(hoge) === null || hoge.poge(hoge) === undefined) {
  console.log('hoge.poge and foo.bar is null or undefined');
}

TODO

In

if (hoge().poge(hoge).isNil) {
  console.log('hoge.poge and foo.bar is null or undefined');
}

Out

if (hoge().poge(hoge) === null || hoge().poge(hoge) === undefined) {
  console.log('hoge.poge and foo.bar is null or undefined');
}

Usage

Via .babelrc

{
  "plugins": ["babel-plugin-transform-isnil"]
}

Development

Requirement global

• Node v5.2.0
• npm v3.7.2

$ git clone https://github.com/MaxMEllon/babel-plugin-transform-isNil
$ cd babel-plugin-transform-isNil
$ npm install

$ npm test

LICENSE

MIT