@babel/plugin-transform-duplicate-keys
NOTE: This plugin is included in
@babel/preset-env
This plugin actually converts duplicate keys in objects to be computed properties, which then must be handled by the @babel/plugin-transform-computed-properties plugin. The final result won't contain any object literals with duplicate keys.
Example
In
var x = { a: 5, a: 6 }; var y = { get a() {}, set a(x) {}, a: 3, };
Out
var x = { a: 5, ["a"]: 6 }; var y = { get a() {}, set a(x) {}, ["a"]: 3, };
Installation
npm install --save-dev @babel/plugin-transform-duplicate-keys
Usage
With a configuration file (Recommended)
{ "plugins": ["@babel/plugin-transform-duplicate-keys"] }
Via CLI
babel --plugins @babel/plugin-transform-duplicate-keys script.js
Via Node API
require("@babel/core").transformSync("code", { plugins: ["@babel/plugin-transform-duplicate-keys"], });