@sitecore-jss/sitecore-jss-manifest

Sitecore JavaScript Services manifest utilities

This module is provided as a part of Sitecore JavaScript Services Tech Preview. Please consult LICENSE.md file for details.

Known Issues

• Incompatible with a babel config that uses babel-preset-env with the "modules": false option, e.g.:

  "presets": [
    [
      "env",
      {
        "modules": false
      }
    ],
  ]
  

  The issue is that "modules": false instructs Babel to not transpile your ES6+ modules to a format like CommonJS, which typically allows Webpack to apply tree shaking to your code.

  Unfortunately, this doesn't play well with manifest generation when you use babel-register as a compiler for your manifest spec files. babel-register transpiles your spec files on-the-fly and uses whatever Babel configuration it can find. Therefore, if you have a single .babelrc file or define your Babel config in package.json, then babel-register will use that config. And if that config uses bable-preset-env with "modules": false, then your spec files won't be transpiled.

  The workaround at the moment, assuming you're using Webpack, is to move your Webpack-specific Babel config into your babel-loader options. Then use .babelrc (or equivalent) for other environments like unit testing and manifest generation.