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backend/node_modules/postcss-load-config/LICENSE

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+The MIT License (MIT)
+
+Copyright Michael Ciniawsky <michael.ciniawsky@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backend/node_modules/postcss-load-config/README.md

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+
+
+<div align="center">
+  <img width="100" height="100" title="Load Options" src="http://michael-ciniawsky.github.io/postcss-load-options/logo.svg">
+  <a href="https://github.com/postcss/postcss">
+    <img width="110" height="110" title="PostCSS"           src="http://postcss.github.io/postcss/logo.svg" hspace="10">
+  </a>
+  <img width="100" height="100" title="Load Plugins" src="http://michael-ciniawsky.github.io/postcss-load-plugins/logo.svg">
+  <h1>Load Config</h1>
+</div>
+
+<h2 align="center">Install</h2>
+
+```bash
+npm i -D postcss-load-config
+```
+
+<h2 align="center">Usage</h2>
+
+```bash
+npm i -S|-D postcss-plugin
+```
+
+Install all required PostCSS plugins and save them to your **package.json** `dependencies`/`devDependencies`
+
+Then create a PostCSS config file by choosing one of the following formats
+
+### `package.json`
+
+Create a **`postcss`** section in your project's **`package.json`**
+
+```
+Project (Root)
+  |– client
+  |– public
+  |
+  |- package.json
+```
+
+```json
+{
+  "postcss": {
+    "parser": "sugarss",
+    "map": false,
+    "plugins": {
+      "postcss-plugin": {}
+    }
+  }
+}
+```
+
+### `.postcssrc`
+
+Create a **`.postcssrc`** file in JSON or YAML format
+
+> ℹ️ It's recommended to use an extension (e.g **`.postcssrc.json`** or **`.postcssrc.yml`**) instead of `.postcssrc`
+
+```
+Project (Root)
+  |– client
+  |– public
+  |
+  |- (.postcssrc|.postcssrc.json|.postcssrc.yml)
+  |- package.json
+```
+
+**`.postcssrc.json`**
+```json
+{
+  "parser": "sugarss",
+  "map": false,
+  "plugins": {
+    "postcss-plugin": {}
+  }
+}
+```
+
+**`.postcssrc.yml`**
+```yaml
+parser: sugarss
+map: false
+plugins:
+  postcss-plugin: {}
+```
+
+### `.postcssrc.js` or `postcss.config.js`
+
+You may need some logic within your config.
+In this case create JS/TS file named:
+- `.postcssrc.js`
+- `.postcssrc.mjs`
+- `.postcssrc.cjs`
+- `.postcssrc.ts`
+- `.postcssrc.mts`
+- `.postcssrc.cts`
+- `postcss.config.js`
+- `postcss.config.mjs`
+- `postcss.config.cjs`
+- `postcss.config.ts`
+- `postcss.config.mts`
+- `postcss.config.cts`
+
+> [!NOTE]  
+> For TypeScript configs, you must have [tsx](https://www.npmjs.com/package/tsx) or [jiti](https://www.npmjs.com/package/jiti) installed as a peer dependency.
+
+```
+Project (Root)
+  |– client
+  |– public
+  |- (.postcssrc|postcss.config).(js|mjs|cjs|ts|mts|cts)
+  |- package.json
+```
+
+You can export the config as an `{Object}`
+
+**.postcssrc.js**
+```js
+module.exports = {
+  parser: 'sugarss',
+  map: false,
+  plugins: {
+    'postcss-plugin': {}
+  }
+}
+```
+
+Or export a `{Function}` that returns the config (more about the `ctx` param below)
+
+**.postcssrc.js**
+```js
+module.exports = (ctx) => ({
+  parser: ctx.parser ? 'sugarss' : false,
+  map: ctx.env === 'development' ? ctx.map : false,
+  plugins: {
+    'postcss-plugin': ctx.options.plugin
+  }
+})
+```
+
+Plugins can be loaded either using an `{Object}` or an `{Array}`
+
+#### `{Object}`
+
+**.postcssrc.js**
+```js
+module.exports = ({ env }) => ({
+  ...options,
+  plugins: {
+    'postcss-plugin': env === 'production' ? {} : false
+  }
+})
+```
+
+> ℹ️ When using an `{Object}`, the key can be a Node.js module name, a path to a JavaScript file that is relative to the directory of the PostCSS config file, or an absolute path to a JavaScript file.
+
+#### `{Array}`
+
+**.postcssrc.js**
+```js
+module.exports = ({ env }) => ({
+  ...options,
+  plugins: [
+    env === 'production' ? require('postcss-plugin')() : false
+  ]
+})
+```
+> :warning: When using an `{Array}`, make sure to `require()` each plugin
+
+<h2 align="center">Options</h2>
+
+|Name|Type|Default|Description|
+|:--:|:--:|:-----:|:----------|
+|[**`to`**](#to)|`{String}`|`undefined`|Destination File Path|
+|[**`map`**](#map)|`{String\|Object}`|`false`|Enable/Disable Source Maps|
+|[**`from`**](#from)|`{String}`|`undefined`|Source File Path|
+|[**`parser`**](#parser)|`{String\|Function}`|`false`|Custom PostCSS Parser|
+|[**`syntax`**](#syntax)|`{String\|Function}`|`false`|Custom PostCSS Syntax|
+|[**`stringifier`**](#stringifier)|`{String\|Function}`|`false`|Custom PostCSS Stringifier|
+
+### `parser`
+
+**.postcssrc.js**
+```js
+module.exports = {
+  parser: 'sugarss'
+}
+```
+
+### `syntax`
+
+**.postcssrc.js**
+```js
+module.exports = {
+  syntax: 'postcss-scss'
+}
+```
+
+### `stringifier`
+
+**.postcssrc.js**
+```js
+module.exports = {
+  stringifier: 'midas'
+}
+```
+
+### [**`map`**](https://github.com/postcss/postcss/blob/master/docs/source-maps.md)
+
+**.postcssrc.js**
+```js
+module.exports = {
+  map: 'inline'
+}
+```
+
+> :warning: In most cases `options.from` && `options.to` are set by the third-party which integrates this package (CLI, gulp, webpack). It's unlikely one needs to set/use `options.from` && `options.to` within a config file. Unless you're a third-party plugin author using this module and its Node API directly **dont't set `options.from` && `options.to` yourself**
+
+### `to`
+
+```js
+module.exports = {
+  to: 'path/to/dest.css'
+}
+```
+
+### `from`
+
+```js
+module.exports = {
+  from: 'path/to/src.css'
+}
+```
+
+<h2 align="center">Plugins</h2>
+
+### `{} || null`
+
+The plugin will be loaded with defaults
+
+```js
+'postcss-plugin': {} || null
+```
+
+**.postcssrc.js**
+```js
+module.exports = {
+  plugins: {
+    'postcss-plugin': {} || null
+  }
+}
+```
+
+> :warning: `{}` must be an **empty** `{Object}` literal
+
+### `{Object}`
+
+The plugin will be loaded with given options
+
+```js
+'postcss-plugin': { option: '', option: '' }
+```
+
+**.postcssrc.js**
+```js
+module.exports = {
+  plugins: {
+    'postcss-plugin': { option: '', option: '' }
+  }
+}
+```
+
+### `false`
+
+The plugin will not be loaded
+
+```js
+'postcss-plugin': false
+```
+
+**.postcssrc.js**
+```js
+module.exports = {
+  plugins: {
+    'postcss-plugin': false
+  }
+}
+```
+
+### `Ordering`
+
+Plugin **execution order** is determined by declaration in the plugins section (**top-down**)
+
+```js
+{
+  plugins: {
+    'postcss-plugin': {}, // [0]
+    'postcss-plugin': {}, // [1]
+    'postcss-plugin': {}  // [2]
+  }
+}
+```
+
+<h2 align="center">Context</h2>
+
+When using a `{Function}` (`postcss.config.js` or `.postcssrc.js`), it's possible to pass context to `postcss-load-config`, which will be evaluated while loading your config. By default `ctx.env (process.env.NODE_ENV)` and `ctx.cwd (process.cwd())` are available on the `ctx` `{Object}`
+
+> ℹ️ Most third-party integrations add additional properties to the `ctx` (e.g `postcss-loader`). Check the specific module's README for more information about what is available on the respective `ctx`
+
+<h2 align="center">Examples</h2>
+
+**postcss.config.js**
+
+```js
+module.exports = (ctx) => ({
+  parser: ctx.parser ? 'sugarss' : false,
+  map: ctx.env === 'development' ? ctx.map : false,
+  plugins: {
+    'postcss-import': {},
+    'postcss-nested': {},
+    cssnano: ctx.env === 'production' ? {} : false
+  }
+})
+```
+
+<div align="center">
+  <img width="80" height="80" src="https://worldvectorlogo.com/logos/nodejs-icon.svg">
+</div>
+
+```json
+"scripts": {
+  "build": "NODE_ENV=production node postcss",
+  "start": "NODE_ENV=development node postcss"
+}
+```
+
+```js
+const { readFileSync } = require('fs')
+
+const postcss = require('postcss')
+const postcssrc = require('postcss-load-config')
+
+const css = readFileSync('index.css', 'utf8')
+
+const ctx = { parser: true, map: 'inline' }
+
+postcssrc(ctx).then(({ plugins, options }) => {
+  postcss(plugins)
+    .process(css, options)
+    .then((result) => console.log(result.css))
+})
+```
+
+<div align="center">
+  <img width="80" height="80" halign="10" src="https://worldvectorlogo.com/logos/gulp.svg">
+</div>
+
+```json
+"scripts": {
+  "build": "NODE_ENV=production gulp",
+  "start": "NODE_ENV=development gulp"
+}
+```
+
+```js
+const { task, src, dest, series, watch } = require('gulp')
+
+const postcss = require('gulp-postcssrc')
+
+const css = () => {
+  src('src/*.css')
+    .pipe(postcss())
+    .pipe(dest('dest'))
+})
+
+task('watch', () => {
+  watch(['src/*.css', 'postcss.config.js'], css)
+})
+
+task('default', series(css, 'watch'))
+```
+
+<div align="center">
+  <img width="80" height="80" src="https://cdn.rawgit.com/webpack/media/e7485eb2/logo/icon.svg">
+</div>
+
+```json
+"scripts": {
+  "build": "NODE_ENV=production webpack",
+  "start": "NODE_ENV=development webpack-dev-server"
+}
+```
+
+**webpack.config.js**
+```js
+module.exports = (env) => ({
+  module: {
+    rules: [
+      {
+        test: /\.css$/,
+        use: [
+          'style-loader',
+          'css-loader',
+          'postcss-loader'
+        ]
+      }
+    ]
+  }
+})
+```
+
+<h2 align="center">Maintainers</h2>
+
+<table>
+  <tbody>
+   <tr>
+    <td align="center">
+      <img width="150" height="150"
+        src="https://github.com/michael-ciniawsky.png?v=3&s=150">
+      <br />
+      <a href="https://github.com/michael-ciniawsky">Michael Ciniawsky</a>
+    </td>
+    <td align="center">
+      <img width="150" height="150"
+        src="https://github.com/ertrzyiks.png?v=3&s=150">
+      <br />
+      <a href="https://github.com/ertrzyiks">Mateusz Derks</a>
+    </td>
+  </tr>
+  <tbody>
+</table>
+
+<h2 align="center">Contributors</h2>
+
+<table>
+  <tbody>
+   <tr>
+    <td align="center">
+      <img width="150" height="150"
+        src="https://github.com/sparty02.png?v=3&s=150">
+      <br />
+      <a href="https://github.com/sparty02">Ryan Dunckel</a>
+    </td>
+    <td align="center">
+      <img width="150" height="150"
+        src="https://github.com/pcgilday.png?v=3&s=150">
+      <br />
+      <a href="https://github.com/pcgilday">Patrick Gilday</a>
+    </td>
+    <td align="center">
+      <img width="150" height="150"
+        src="https://github.com/daltones.png?v=3&s=150">
+      <br />
+      <a href="https://github.com/daltones">Dalton Santos</a>
+    </td>
+    <td align="center">
+      <img width="150" height="150"
+        src="https://github.com/fwouts.png?v=3&s=150">
+      <br />
+      <a href="https://github.com/fwouts">François Wouts</a>
+    </td>
+  </tr>
+  <tbody>
+</table
+
+
+## Security Contact
+
+To report a security vulnerability, please use the [Tidelift security contact].
+Tidelift will coordinate the fix and disclosure.
+
+[Tidelift security contact]: https://tidelift.com/security

backend/node_modules/postcss-load-config/package.json

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+{
+  "name": "postcss-load-config",
+  "version": "5.1.0",
+  "description": "Autoload Config for PostCSS",
+  "main": "src/index.js",
+  "types": "src/index.d.ts",
+  "files": [
+    "src"
+  ],
+  "engines": {
+    "node": ">= 18"
+  },
+  "funding": [
+    {
+      "type": "opencollective",
+      "url": "https://opencollective.com/postcss/"
+    },
+    {
+      "type": "github",
+      "url": "https://github.com/sponsors/ai"
+    }
+  ],
+  "dependencies": {
+    "lilconfig": "^3.1.1",
+    "yaml": "^2.4.2"
+  },
+  "peerDependencies": {
+    "jiti": ">=1.21.0",
+    "postcss": ">=8.0.9",
+    "tsx": "^4.8.1"
+  },
+  "peerDependenciesMeta": {
+    "jiti": {
+      "optional": true
+    },
+    "postcss": {
+      "optional": true
+    },
+    "tsx": {
+      "optional": true
+    }
+  },
+  "keywords": [
+    "postcss",
+    "postcssrc",
+    "postcss.config.js"
+  ],
+  "author": "Michael Ciniawky <michael.ciniawsky@gmail.com>",
+  "contributors": [
+    "Ryan Dunckel",
+    "Mateusz Derks",
+    "Dalton Santos",
+    "Patrick Gilday",
+    "François Wouts"
+  ],
+  "repository": "postcss/postcss-load-config",
+  "license": "MIT"
+}

backend/node_modules/postcss-load-config/src/index.d.ts

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+// based on @types/postcss-load-config@2.0.1
+// Type definitions for postcss-load-config 2.1
+import Processor from 'postcss/lib/processor'
+import { Plugin, ProcessOptions, Transformer } from 'postcss'
+import { Options as ConfigOptions } from 'lilconfig'
+
+declare function postcssrc(
+  ctx?: postcssrc.ConfigContext,
+  path?: string,
+  options?: ConfigOptions
+): Promise<postcssrc.Result>
+
+declare namespace postcssrc {
+  // In the ConfigContext, these three options can be instances of the
+  // appropriate class, or strings. If they are strings, postcss-load-config will
+  // require() them and pass the instances along.
+  export interface ProcessOptionsPreload {
+    parser?: string | ProcessOptions['parser']
+    stringifier?: string | ProcessOptions['stringifier']
+    syntax?: string | ProcessOptions['syntax']
+  }
+
+  // The remaining ProcessOptions, sans the three above.
+  export type RemainingProcessOptions = Pick<
+    ProcessOptions,
+    Exclude<keyof ProcessOptions, keyof ProcessOptionsPreload>
+  >
+
+  // Additional context options that postcss-load-config understands.
+  export interface Context {
+    cwd?: string
+    env?: string
+  }
+
+  // The full shape of the ConfigContext.
+  export type ConfigContext = Context &
+    ProcessOptionsPreload &
+    RemainingProcessOptions
+
+  // Result of postcssrc is a Promise containing the filename plus the options
+  // and plugins that are ready to pass on to postcss.
+  export type ResultPlugin = Plugin | Transformer | Processor
+
+  export interface Result {
+    file: string
+    options: ProcessOptions
+    plugins: ResultPlugin[]
+  }
+
+  export type ConfigPlugin = Transformer | Plugin | Processor
+
+  export interface Config {
+    parser?: string | ProcessOptions['parser'] | false
+    stringifier?: string | ProcessOptions['stringifier'] | false
+    syntax?: string | ProcessOptions['syntax'] | false
+    map?: string | false
+    from?: string
+    to?: string
+    plugins?: Array<ConfigPlugin | false> | Record<string, object | false>
+  }
+
+  export type ConfigFn = (ctx: ConfigContext) => Config | Promise<Config>
+}
+
+export = postcssrc

backend/node_modules/postcss-load-config/src/index.js

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+// @ts-check
+const { resolve } = require('node:path')
+
+const config = require('lilconfig')
+const yaml = require('yaml')
+
+const loadOptions = require('./options.js')
+const loadPlugins = require('./plugins.js')
+const req = require('./req.js')
+
+const interopRequireDefault = obj =>
+  obj && obj.__esModule ? obj : { default: obj }
+
+/**
+ * Process the result from cosmiconfig
+ *
+ * @param  {Object} ctx Config Context
+ * @param  {Object} result Cosmiconfig result
+ *
+ * @return {Promise<Object>} PostCSS Config
+ */
+async function processResult(ctx, result) {
+  let file = result.filepath || ''
+  let projectConfig = interopRequireDefault(result.config).default || {}
+
+  if (typeof projectConfig === 'function') {
+    projectConfig = projectConfig(ctx)
+  } else {
+    projectConfig = Object.assign({}, projectConfig, ctx)
+  }
+
+  if (!projectConfig.plugins) {
+    projectConfig.plugins = []
+  }
+
+  let res = {
+    file,
+    options: await loadOptions(projectConfig, file),
+    plugins: await loadPlugins(projectConfig, file)
+  }
+  delete projectConfig.plugins
+  return res
+}
+
+/**
+ * Builds the Config Context
+ *
+ * @param  {Object} ctx Config Context
+ *
+ * @return {Object} Config Context
+ */
+function createContext(ctx) {
+  /**
+   * @type {Object}
+   *
+   * @prop {String} cwd=process.cwd() Config search start location
+   * @prop {String} env=process.env.NODE_ENV Config Enviroment, will be set to `development` by `postcss-load-config` if `process.env.NODE_ENV` is `undefined`
+   */
+  ctx = Object.assign(
+    {
+      cwd: process.cwd(),
+      env: process.env.NODE_ENV
+    },
+    ctx
+  )
+
+  if (!ctx.env) {
+    process.env.NODE_ENV = 'development'
+  }
+
+  return ctx
+}
+
+async function loader(filepath) {
+  return req(filepath)
+}
+
+/** @return {import('lilconfig').Options} */
+const withLoaders = (options = {}) => {
+  let moduleName = 'postcss'
+
+  return {
+    ...options,
+    loaders: {
+      ...options.loaders,
+      '.cjs': loader,
+      '.cts': loader,
+      '.js': loader,
+      '.mjs': loader,
+      '.mts': loader,
+      '.ts': loader,
+      '.yaml': (_, content) => yaml.parse(content),
+      '.yml': (_, content) => yaml.parse(content)
+    },
+    searchPlaces: [
+      ...(options.searchPlaces || []),
+      'package.json',
+      `.${moduleName}rc`,
+      `.${moduleName}rc.json`,
+      `.${moduleName}rc.yaml`,
+      `.${moduleName}rc.yml`,
+      `.${moduleName}rc.ts`,
+      `.${moduleName}rc.cts`,
+      `.${moduleName}rc.mts`,
+      `.${moduleName}rc.js`,
+      `.${moduleName}rc.cjs`,
+      `.${moduleName}rc.mjs`,
+      `${moduleName}.config.ts`,
+      `${moduleName}.config.cts`,
+      `${moduleName}.config.mts`,
+      `${moduleName}.config.js`,
+      `${moduleName}.config.cjs`,
+      `${moduleName}.config.mjs`
+    ]
+  }
+}
+
+/**
+ * Load Config
+ *
+ * @method rc
+ *
+ * @param  {Object} ctx Config Context
+ * @param  {String} path Config Path
+ * @param  {Object} options Config Options
+ *
+ * @return {Promise} config PostCSS Config
+ */
+function rc(ctx, path, options) {
+  /**
+   * @type {Object} The full Config Context
+   */
+  ctx = createContext(ctx)
+
+  /**
+   * @type {String} `process.cwd()`
+   */
+  path = path ? resolve(path) : process.cwd()
+
+  return config
+    .lilconfig('postcss', withLoaders(options))
+    .search(path)
+    .then(result => {
+      if (!result) {
+        throw new Error(`No PostCSS Config found in: ${path}`)
+      }
+      return processResult(ctx, result)
+    })
+}
+
+/**
+ * Autoload Config for PostCSS
+ *
+ * @author Michael Ciniawsky @michael-ciniawsky <michael.ciniawsky@gmail.com>
+ * @license MIT
+ *
+ * @module postcss-load-config
+ * @version 2.1.0
+ *
+ * @requires comsiconfig
+ * @requires ./options
+ * @requires ./plugins
+ */
+module.exports = rc

backend/node_modules/postcss-load-config/src/options.js

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+// @ts-check
+const req = require('./req.js')
+
+/**
+ * Load Options
+ *
+ * @private
+ * @method options
+ *
+ * @param  {Object} config  PostCSS Config
+ *
+ * @return {Promise<Object>} options PostCSS Options
+ */
+async function options(config, file) {
+  if (config.parser && typeof config.parser === 'string') {
+    try {
+      config.parser = await req(config.parser, file)
+    } catch (err) {
+      throw new Error(
+        `Loading PostCSS Parser failed: ${err.message}\n\n(@${file})`
+      )
+    }
+  }
+
+  if (config.syntax && typeof config.syntax === 'string') {
+    try {
+      config.syntax = await req(config.syntax, file)
+    } catch (err) {
+      throw new Error(
+        `Loading PostCSS Syntax failed: ${err.message}\n\n(@${file})`
+      )
+    }
+  }
+
+  if (config.stringifier && typeof config.stringifier === 'string') {
+    try {
+      config.stringifier = await req(config.stringifier, file)
+    } catch (err) {
+      throw new Error(
+        `Loading PostCSS Stringifier failed: ${err.message}\n\n(@${file})`
+      )
+    }
+  }
+
+  return config
+}
+
+module.exports = options

backend/node_modules/postcss-load-config/src/plugins.js

@@ -0,0 +1,90 @@
+// @ts-check
+const req = require('./req.js')
+
+/**
+ * Plugin Loader
+ *
+ * @private
+ * @method load
+ *
+ * @param  {String} plugin PostCSS Plugin Name
+ * @param  {Object} options PostCSS Plugin Options
+ *
+ * @return {Promise<Function>} PostCSS Plugin
+ */
+async function load(plugin, options, file) {
+  try {
+    if (
+      options === null ||
+      options === undefined ||
+      Object.keys(options).length === 0
+    ) {
+      return await req(plugin, file)
+    } else {
+      return (await req(plugin, file))(options)
+      /* c8 ignore next */
+    }
+  } catch (err) {
+    throw new Error(
+      `Loading PostCSS Plugin failed: ${err.message}\n\n(@${file})`
+    )
+  }
+}
+
+/**
+ * Load Plugins
+ *
+ * @private
+ * @method plugins
+ *
+ * @param {Object} config PostCSS Config Plugins
+ *
+ * @return {Promise<Array>} plugins PostCSS Plugins
+ */
+async function plugins(config, file) {
+  let list = []
+
+  if (Array.isArray(config.plugins)) {
+    list = config.plugins.filter(Boolean)
+  } else {
+    list = Object.entries(config.plugins)
+      .filter(([, options]) => {
+        return options !== false
+      })
+      .map(([plugin, options]) => {
+        return load(plugin, options, file)
+      })
+    list = await Promise.all(list)
+  }
+
+  if (list.length && list.length > 0) {
+    list.forEach((plugin, i) => {
+      if (plugin.default) {
+        plugin = plugin.default
+      }
+
+      if (plugin.postcss === true) {
+        plugin = plugin()
+      } else if (plugin.postcss) {
+        plugin = plugin.postcss
+      }
+
+      if (
+        // eslint-disable-next-line
+        !(
+          (typeof plugin === 'object' && Array.isArray(plugin.plugins)) ||
+          (typeof plugin === 'object' && plugin.postcssPlugin) ||
+          typeof plugin === 'function'
+        )
+      ) {
+        throw new TypeError(
+          `Invalid PostCSS Plugin found at: plugins[${i}]\n\n(@${file})`
+        )
+      }
+    })
+  }
+
+  return list
+}
+
+module.exports = plugins

backend/node_modules/postcss-load-config/src/req.js

@@ -0,0 +1,59 @@
+// @ts-check
+const { createRequire } = require('node:module')
+const { pathToFileURL } = require('node:url')
+
+const TS_EXT_RE = /\.[mc]?ts$/
+
+let tsx
+
+let jiti
+
+let importError
+
+/**
+ * @param {string} name
+ * @param {string} rootFile
+ * @returns {Promise<any>}
+ */
+async function req(name, rootFile = __filename) {
+  let url = createRequire(rootFile).resolve(name)
+
+  try {
+    return (await import(`${pathToFileURL(url)}?t=${Date.now()}`)).default
+  } catch (err) {
+    if (!TS_EXT_RE.test(url)) {
+      /* c8 ignore start */
+      throw err
+    }
+  }
+
+  if (tsx === undefined) {
+    tsx = await import('tsx/cjs/api').catch(error => {
+      importError = error
+    })
+  }
+
+  if (tsx) {
+    let loaded = tsx.require(name, rootFile)
+    return loaded && '__esModule' in loaded ? loaded.default : loaded
+  }
+
+  if (jiti === undefined) {
+    jiti = await import('jiti').then(
+      m => m.default,
+      error => {
+        importError = importError ?? error
+      }
+    )
+  }
+
+  if (jiti) {
+    return jiti(rootFile, { interopDefault: true })(name)
+  }
+
+  throw new Error(
+    `'tsx' or 'jiti' is required for the TypeScript configuration files. Make sure it is installed\nError: ${importError.message}`
+  )
+}
+
+module.exports = req