Possible webpack-blocks API

block-update-function.js

// With merge helper:

module.exports = function exampleBlock () {
  return (context, { merge }) => merge({
    module: {
      rules: [
        {
          test: context.fileType('text/css'),
          use: ['sample-css-loader']
        }
      ]
    }
  })
}

// With addLoader helper:

module.exports = function exampleBlock () {
  return (context, { addLoader }) => addLoader({
    test: context.fileType('text/css'),
    use: ['sample-css-loader']
  })
}

// Without merge helper:

module.exports = function exampleBlock () {
  return context => config => ({
    ...config,
    module: {
      ...config.module,
      rules: config.module.rules.concat([
        {
          test: context.fileType('text/css'),
          use: ['sample-css-loader']
        }
      ])
    }
  })
}

Utility functions to pass into the block (2nd param): (Draft)

• merge()
• addLoader()
• addPlugin()