@babel/plugin-syntax-optional-chaining
Allow parsing of optional properties.
Installation
npm install --save-dev @babel/plugin-syntax-optional-chaining
Usage
Via .babelrc (Recommended)
.babelrc
{
"plugins": ["@babel/syntax-optional-chaining"]
}
Via CLI
babel --plugins @babel/syntax-optional-chaining script.js
Via Node API
require("@babel/core").transform("code", {
plugins: ["@babel/syntax-optional-chaining"]
});