packages/babel-preset-env/src/module-transformations.js
// @flow
import typeof AvailablePlugins from "./available-plugins";
export default ({
auto: "transform-modules-commonjs",
amd: "transform-modules-amd",
commonjs: "transform-modules-commonjs",
cjs: "transform-modules-commonjs",
systemjs: "transform-modules-systemjs",
umd: "transform-modules-umd",
}: { [transform: string]: $Keys<AvailablePlugins> });