Search results
- Dictionarybabel/ˈbeɪbl/
noun
- 1. a confused noise made by a number of voices: "the babel of voices on the road"
Powered by Oxford Dictionaries
What is Babel? Babel is a JavaScript compiler Babel is a toolchain that is mainly used to convert ECMAScript 2015+ code into a backwards compatible version of JavaScript in current and older browsers or environments. Here are the main things Babel can do for you: Transform syntax
Learn more about Babel with our getting started guide or check out some videos on the people and concepts behind it.
babel.config.json < .babelrc < programmatic options from @babel/cli In other words, babel.config.json is overwritten by .babelrc , and .babelrc is overwritten by programmatic options. For each config source, Babel prints applicable config items (e.g. overrides and env ) in the order of ascending priority.
@babel/standalone provides a standalone build of Babel for use in browsers and other non-Node.js environments. When (not) to use @babel/standalone If you're using Babel in production, you should normally not use @babel/standalone .
There are quite a few tools in the Babel toolchain that try to make it easy for you to use Babel whether you're an "end-user" or building an integration of Babel itself. This will be a quick introduction to those tools and you can read more about them in the "Usage" section of the docs.
New in Babel 7.x, Babel has a concept of a "root" directory, which defaults to the current working directory. For project-wide configuration, Babel will automatically search for a babel.config.json file, or an equivalent one using the supported extensions, in this root directory.
babel-node is a CLI that works exactly the same as the Node.js CLI, with the added benefit of compiling with Babel presets and plugins before running it. Install npm
Install the vscode-language-babel extension and follow the instructions. There seems to be one other way to get the syntax highlighting working and you can learn more about it in the Visual Studio Code docs .
Most syntax is transformable by Babel. In rarer cases (if the transform isn't implemented yet, or there isn't a default way to do so), you can use plugins such as @babel/plugin-syntax-bigint to only allow Babel to parse specific types of syntax. Or you want to preserve the source code because you only want Babel to do code analysis or codemods.
You've configured Babel but you haven't made it actually do anything. Create a babel.config.json config in your project root and enable some presets . To start, you can use the env preset , which enables transforms for ES2015+
