Fix css modules, and JSON import

[procopenco]

Changes

Fix for #2998
Fix for #3760

In this PR I did a couple of changes to fix development and production environments when CSS modules are used.

1. First change was related to fix the generated JSON based on CSS module.
   I moved JSON generation after transform plugins are applied, because the .sass, .less or .css (with postcss) should be transformed to CSS, and after that resulted CSS is ready to be transformed to JSON.

2. Second change is related to fileBuilder. When .js, .jsx, .ts or .tsx file is transformed through fileBuilder for the case when it contains a .module.css import, it requires to add an extra import to the generated JSON. It MUST be part of the final bundle
   Ex. We have import styles from './test.module.css'

   1. import './test.module.css'
   2. import styles from './test.module.css.json'
      Why we need this?
      Both files should be part of final bundle. test.module.css' - will be part of final index.css, and test.module.css.json will be part of final index.js

3. Third change is to allow esbuild to add JSON files into the final bundle.
   As I said the generated JSON based on *.module.css should be part of the bundle.

Example

test.module.css - I am using postcss with a couple of additional plugins

.block {
  display: block;
  box-sizing: border-box;
}

@each $side in top, right, bottom, left {
  .margin-$(side) {
    margin: 1rem;
  }
}

Before change

test.module.css.json generated JSON which is not included in the final bundle

{"block":"_block_re84t_1","margin-$(side)":"_margin-$(side)_re84t_7"}

content in JS bundle

// build/dist/lib/controls/test/test.module.css
var _default = {};

NOTE: content in CSS bundle - everything is OK

After change

test.module.css.json is included in the final bundle and it looks

// build/dist/lib/controls/test/test.module.css.json
var block = "_block_1jm6y_1";
var margin_top = "_margin-top_1jm6y_6";
var margin_right = "_margin-right_1jm6y_10";
var margin_bottom = "_margin-bottom_1jm6y_14";
var margin_left = "_margin-left_1jm6y_18";
var block_module_css_default = {block, "margin-top": margin_top, "margin-right": margin_right, "margin-bottom": margin_bottom, "margin-left": margin_left};

content from CSS bundle

/* build/dist/lib/controls/test/test.module.css */
._block_1jm6y_1 {
  display: block;
  box-sizing: border-box;
}
._margin-top_1jm6y_6 {
  margin: 1rem;
}
._margin-right_1jm6y_10 {
  margin: 1rem;
}
._margin-bottom_1jm6y_14 {
  margin: 1rem;
}
._margin-left_1jm6y_18 {
  margin: 1rem;
}

Testing

• Tested locally

Docs

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[procopenco]

@drwpow PTAL

[procopenco]

It seems this repo is dead :(((