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babel-plugin-transform-merge-sibling-variables

babel-plugin-transform-merge-sibling-variables

Merge sibling variables into one.

Example

In

// merge into a single VariableDeclaration 
var foo = "bar";
var bar = "foo";
foobar();
 
// merge into the next for loop 
var i = 0;
for (var x = 0; x < 10; x++) {}

Out

var foo = "bar",
    bar = "foo";
foobar();
 
for (var i = 0, x = 0; x < 10; x++) {}

Installation

npm install babel-plugin-transform-merge-sibling-variables

Usage

Via .babelrc (Recommended)

.babelrc

{
  "plugins": ["transform-merge-sibling-variables"]
}

Via CLI

babel --plugins transform-merge-sibling-variables script.js

Via Node API

require("babel-core").transform("code", {
  plugins: ["transform-merge-sibling-variables"]
});