# babel-plugin-transform-es2015-sticky-regex > Compile ES2015 sticky regex to an ES5 RegExp constructor ## Examples **In** ```javascript const a = /o+/y; ``` **Out** ```javascript var a = new RegExp("o+", "y"); ``` ## Installation ```sh npm install --save-dev babel-plugin-transform-es2015-sticky-regex ``` ## Usage ### Via `.babelrc` (Recommended) **.babelrc** ```json { "plugins": ["transform-es2015-sticky-regex"] } ``` ### Via CLI ```sh babel --plugins transform-es2015-sticky-regex script.js ``` ### Via Node API ```javascript require("babel-core").transform("code", { plugins: ["transform-es2015-sticky-regex"] }); ```