update to postcss v8 and fix tests file path resolve

Author: DemChing

README.md

@@ -1,16 +1,30 @@
 # CSS Module Loader Core
-> A loader-agnostic CSS Modules implementation, based on PostCSS
+> A loader-agnostic CSS Modules implementation, based on `PostCSS@8`
 
-[![Build Status](https://travis-ci.org/css-modules/css-modules-loader-core.svg?branch=master)](https://travis-ci.org/css-modules/css-modules-loader-core)
+> If you don't use plugins for `PostCSS@8`, use the original package instead.
+
+[![Build Status](https://travis-ci.org/demching/demching-loader-core.svg?branch=master)](https://travis-ci.org/demching/demching-loader-core)
+
+## Notice
+This is a modified repository of [css-modules-loader-core](https://github.com/css-modules/css-modules-loader-core) with the following changes:
+
+1. Rewrite in `Typescript`.
+2. Update some dependencies to latest version: `PostCSS` and related plugins.
+3. Change the usage of `file-system-loader`.
+
+The original package depends on `PostCSS@6` which has a different usage of plugins to the latest `PostCSS@8`. Incompatible plugins is the main reason I created this package. You may install the original package if you are not using custom plugins.
+
+Usage of this package should be the same as original repo unless you are using `file-system-loader`. Check [here](#file-system-loader) for details.
 
 ## API
 
 ```js
-import Core from 'css-modules-loader-core'
+import Core from '@demching113/css-modules-loader-core'
 let core = new Core()
 ```
 
-### core.load( sourceString , sourcePath , pathFetcher ) =><br>&nbsp;&nbsp;Promise({ injectableSource, exportTokens })
+### core.load
+> __core.load( sourceString , sourcePath, depTrace , pathFetcher ) => Promise({ injectableSource, exportTokens })__
 
 Processes the input CSS `sourceString`, looking for dependencies such as `@import` or `:import`. Any localisation will happen by prefixing a sanitised version of `sourcePath` When dependencies are found, it will ask the `pathFetcher` for each dependency, resolve & inline any imports, and return the following object:
 
@@ -24,16 +38,51 @@ These should map nicely to what your build-tool-specific loader needs to do its
 The default set of plugins is [[postcss-modules-local-by-default](https://github.com/css-modules/postcss-modules-local-by-default), [postcss-modules-extract-imports](https://github.com/css-modules/postcss-modules-extract-imports), [postcss-modules-scope](https://github.com/css-modules/postcss-modules-scope)] (i.e. the CSS Modules specification). This can override which PostCSS plugins you wish to execute, e.g.
 
 ```js
-import Core from 'css-loader-core'
+import Core from '@demching113/css-modules-loader-core'
 import autoprefixer from 'autoprefixer'
 import colorFunctions from 'postcss-color-function'
 
-// Don't run local-by-default, but use colorFunctions 
+// Don't run local-by-default, but use colorFunctions
 // beforehand and autoprefixer afterwards:
 let core = new Core([
-  colorFunctions, 
-  core.plugins.extractImports, 
-  core.plugins.scope, 
+  colorFunctions,
+  Core.extractImports,
+  Core.scope,
   autoprefixer("Last 2 Versions")
 ])
 ```
+
+## File System Loader
+This loader was used only for testing in original repository. However, it doesn't work because the file path is not resolved correctly. See related [issue](https://github.com/css-modules/css-modules-loader-core/issues/232).
+
+So I try to fix the bug and end up changing its usage.
+
+> P.S. This is tested on Windows only so it may not work on Unix system.
+
+```js
+import { FileSystemLoader } from '@demching113/css-modules-loader-core';
+// Specify the absolute path of root. E.g. C:\users\your\root\of\src
+let fileLoader = new FileSystemLoader(rootAbsolutePath);
+
+// or with using plugins
+let fileLoader = new FileSystemLoader(rootAbsolutePath, [
+  // your plugins
+]);
+```
+
+### fileLoader.load
+> __fileLoader.load( sourceString , sourceRelativePath , depTrace ) => Promise({ injectableSource, exportTokens })__
+
+The usage is similar to [`core.load`](#coreload) except you don't need to provide `pathFetcher`.
+
+Also, you may need to provide the file path `sourceRelativePath` relative to `rootAbsolutePath`.
+
+For example, the `rootAbsolutePath` is `/root/of/src` and you want to load `/root/of/src/styles/main.css`:
+
+```js
+let fileLoader = new FileSystemLoader(`/root/of/src`);
+fileLoader.load(
+  contents, // contents of main.css
+  `styles/main.css`, // relative path
+)
+```

babel.config.json

@@ -0,0 +1,3 @@
+{
+  "presets": ["@babel/preset-env", "@babel/preset-typescript"]
+}

package.json

@@ -1,37 +1,44 @@
 {
-  "name": "css-modules-loader-core",
+  "name": "@demching113/css-modules-loader-core",
   "version": "1.1.0",
-  "description": "A loader-agnostic CSS Modules implementation, based on PostCSS",
+  "description": "A loader-agnostic CSS Modules implementation, based on PostCSS@8.x",
   "main": "lib/index.js",
   "directories": {
     "test": "test"
   },
   "dependencies": {
     "icss-replace-symbols": "1.1.0",
-    "postcss": "6.0.1",
-    "postcss-modules-extract-imports": "1.1.0",
-    "postcss-modules-local-by-default": "1.2.0",
-    "postcss-modules-scope": "1.1.0",
-    "postcss-modules-values": "1.3.0"
+    "postcss": "8.4.12",
+    "postcss-modules-extract-imports": "3.0.0",
+    "postcss-modules-local-by-default": "4.0.0",
+    "postcss-modules-scope": "3.0.0",
+    "postcss-modules-values": "4.0.0"
   },
   "devDependencies": {
-    "babel": "5.8.29",
-    "babel-eslint": "7.1.0",
-    "babelify": "7.3.0",
+    "@babel/cli": "^7.17.6",
+    "@babel/core": "^7.17.8",
+    "@babel/preset-env": "^7.16.11",
+    "@babel/preset-typescript": "^7.16.7",
+    "@types/chai": "^4.3.0",
+    "@types/mocha": "^9.1.0",
+    "@types/node": "^17.0.21",
+    "babelify": "10.0.0",
     "chokidar-cli": "1.1.0",
     "eslint": "3.10.1",
-    "mocha": "3.1.2"
+    "mocha": "3.1.2",
+    "ts-node": "^10.7.0",
+    "typescript": "^4.6.2"
   },
   "scripts": {
     "lint": "eslint src",
-    "build": "babel --out-dir lib src",
+    "build": "babel --extensions '.ts' --out-dir lib src && tsc",
     "autotest": "chokidar src test -c 'npm test'",
-    "test": "mocha --compilers js:babel/register",
+    "test": "mocha --compilers ts:ts-node/register",
     "prepublish": "rm -rf lib/* && npm run build"
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/css-modules/css-modules-loader-core.git"
+    "url": "https://github.com/demching/css-modules-loader-core.git"
   },
   "keywords": [
     "css-modules",
@@ -41,10 +48,13 @@
   "files": [
     "lib"
   ],
-  "author": "Glen Maddern",
+  "author": "Dem Ching",
   "license": "ISC",
   "bugs": {
-    "url": "https://github.com/css-modules/css-modules-loader-core/issues"
+    "url": "https://github.com/demching/css-modules-loader-core/issues"
   },
-  "homepage": "https://github.com/css-modules/css-modules-loader-core"
+  "homepage": "https://github.com/demching/css-modules-loader-core",
+  "publishConfig": {
+    "access": "public"
+  }
 }