packages/kbn-babel-preset/README.mdx
This package contains the shared bits of babel config that we use for transpiling our source code to code compatible with Node.JS and the various browsers we support.
To use those presets add either @kbn/babel-preset/node_preset or @kbn/babel-preset/webpack_preset into the babel config file.
@kbn/babel-preset/node_preset is usually placed in a babel.config.js file.
@kbn/babel-preset/webpack_preset is usually placed directly in a webpack configuration.
If you're transpiling code that will be run in both the browser and node you must transpile your code twice, once for each target.
Along with the introduction of Bazel to build packages we also provide now an easier way to easily use the babel transpiler by using the js_ts_tarnspiler rule with our without the web property enabled.
Take a look for example at @kbn/i18n to see how that can look.