feat: Custom Component Files to master

[arminbro]

Custom component files

GRC comes with corresponding built-in files for a given component if you need them (i.e., withStyle, withTest, withStory, and withLazy).

What if you wanted to add custom files of your own?

For example, let's say you wanted to add an index.js file for each component, so you don't have to add the additional component name with each import (i.e., import Box from './components/Box' instead of import Box from './components/Box/Box').

Or maybe you need an additional style file for your component stories.

You can do so by editing your generate-react-cli.json config file like so.

{
  "usesTypeScript": false,
  "usesCssModule": false,
  "cssPreprocessor": "css",
  "testLibrary": "Testing Library",
  "component": {
    "default": {
      "path": "src/components",
      "withStyle": true,
      "withTest": true,
      "withStory": true,
      "withLazy": false,
      "withIndex": true,
      "withStoryStyle": true,
      "customTemplates": {
        "index": "templates/default/index.js",
        "storyStyle": "templates/default/TemplateName.stories.css"
      }
    }
  }
}

// templates/default/index.js

export { default } from './TemplateName';

/* templates/default/TemplateName.stories.css */

.TemplateName {}

In this case, we added a withIndex & withStoryStyle to the component.default. Note: You can add custom files to any of your custom component types.

You should also see that we added index and storyStyle to our customTemplates object. That's because custom files require custom templates. Otherwise, you will get an error when you generate a component.

Also, we used the TemplateName keyword for the storyStyle custom file. GRC will generate this corresponding file and replace TemplateName with the component name.

This PR should close #21, #22, #27, #34, #36, #37, #39