@babel/plugin-transform-typeof-symbol

NOTE: This plugin is included in @babel/preset-env

Example

In

JavaScript

typeof Symbol() === "symbol";

Out

JavaScript

var _typeof = function(obj) {
  return obj && obj.constructor === Symbol ? "symbol" : typeof obj;
};

_typeof(Symbol()) === "symbol";

Installation

npm

npm install --save-dev @babel/plugin-transform-typeof-symbol

Yarn

yarn add --dev @babel/plugin-transform-typeof-symbol

pnpm

pnpm add --save-dev @babel/plugin-transform-typeof-symbol

Usage

With a configuration file (Recommended)

babel.config.json

{
  "plugins": ["@babel/plugin-transform-typeof-symbol"]
}

Via CLI

Shell

babel --plugins @babel/plugin-transform-typeof-symbol script.js

Via Node API

JavaScript

require("@babel/core").transformSync("code", {
  plugins: ["@babel/plugin-transform-typeof-symbol"],
});