@babel/plugin-transform-instanceof
NOTE: This plugin is included in
@babel/preset-env
Example
In
foo instanceof Bar;
Out
function _instanceof(left, right) { if ( right != null && typeof Symbol !== "undefined" && right[Symbol.hasInstance] ) { return right[Symbol.hasInstance](left); } else { return left instanceof right; } } _instanceof(foo, Bar);
Installation
npm install --save-dev @babel/plugin-transform-instanceof
Usage
With a configuration file (Recommended)
{ "plugins": ["@babel/plugin-transform-instanceof"] }
Via CLI
babel --plugins @babel/plugin-transform-instanceof script.js
Via Node API
require("@babel/core").transformSync("code", { plugins: ["@babel/plugin-transform-instanceof"], });