babel-plugin-syntax-trailing-function-commas

What is babel-plugin-syntax-trailing-function-commas?

The babel-plugin-syntax-trailing-function-commas npm package allows Babel to parse trailing commas in function parameter lists and calls. This is particularly useful for improving the readability and maintainability of code by allowing developers to add new parameters without modifying the last line of the existing parameters.

What are babel-plugin-syntax-trailing-function-commas's main functionalities?

Parsing trailing commas in function parameters

This feature enables the parsing of trailing commas in function parameter lists, which can help in minimizing diff outputs when new parameters are added.

function example(a, b, c,) {\n  return a + b + c;\n}

Parsing trailing commas in function calls

This feature allows for trailing commas in function calls, aligning with the enhanced syntax capabilities for array and object literals.

example(1, 2, 3,);

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README

babel-plugin-syntax-trailing-function-commas

Compile trailing function commas to ES5

Installation

$ npm install babel-plugin-syntax-trailing-function-commas

Usage

Via .babelrc (Recommended)

.babelrc

{
  "plugins": ["syntax-trailing-function-commas"]
}

Via CLI

$ babel --plugins syntax-trailing-function-commas script.js

Via Node API

require("babel-core").transform("code", {
  plugins: ["syntax-trailing-function-commas"]
});