# babel-plugin-transform-es2015-literals > Compile ES2015 unicode string and number literals to ES5 ## Example **In** ```js var b = 0b11; // binary integer literal var o = 0o7; // octal integer literal const u = 'Hello\u{000A}\u{0009}!'; // unicode string literals, newline and tab ``` **Out** ```js var b = 3; // binary integer literal var o = 7; // octal integer literal const u = 'Hello\n\t!'; // unicode string literals, newline and tab ``` ## Installation ```sh npm install --save-dev babel-plugin-transform-es2015-literals ``` ## Usage ### Via `.babelrc` (Recommended) **.babelrc** ```json { "plugins": ["transform-es2015-literals"] } ``` ### Via CLI ```sh babel --plugins transform-es2015-literals script.js ``` ### Via Node API ```javascript require("babel-core").transform("code", { plugins: ["transform-es2015-literals"] }); ```