fix: windows paths handling (#6)

.changeset/fifty-roses-heal.md

@@ -0,0 +1,6 @@
+---
+"hot-hook": patch
+---
+
+`--import=hot-hook/register` was broken due to a bug in path handling that wasn't cross platform. This has been fixed and also added a Windows CI to prevent this from happening again.
+

.github/workflows/check.yml

@@ -50,7 +50,10 @@ jobs:
       run: pnpm typecheck
 
   tests:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
     timeout-minutes: 10
 
     steps:
@@ -72,4 +75,6 @@ jobs:
         pnpm -r build
 
     - name: Run tests
-      run: FORCE_COLOR=1 pnpm test
+      env:
+        FORCE_COLOR: 1
+      run: pnpm test

packages/hot_hook/src/loader.ts

@@ -63,6 +63,7 @@ export class HotHookLoader {
      */
     const isReloadable = this.#dependencyTree.isReloadable(realFilePath)
     if (!isReloadable) {
+      debug('Full reload %s', realFilePath)
       return this.#messagePort?.postMessage({ type: 'hot-hook:full-reload', path: realFilePath })
     }
 

packages/hot_hook/src/matcher.ts

@@ -2,32 +2,32 @@ import { resolve } from 'node:path'
 import picomatch from 'picomatch'
 
 export class Matcher {
-  #rootDirectory: string
   #matcher: picomatch.Matcher
 
   constructor(rootDirectory: string, patterns: picomatch.Glob = []) {
-    this.#rootDirectory = rootDirectory
-
     patterns = Array.isArray(patterns) ? patterns : [patterns]
+
     const absolutePatterns = patterns
       .map((pattern) => {
-        if (pattern.startsWith('../')) return resolve(rootDirectory, pattern)
-        return pattern
+        /**
+         * Do not resolve double star patterns because they are not relative to the root
+         */
+        if (pattern.startsWith('**')) return pattern
+
+        /**
+         * Resolve the pattern to the root directory. All patterns are relative to the root
+         */
+        return resolve(rootDirectory, pattern)
       })
       .map((path) => path.replace(/\\/g, '/'))
 
-    this.#matcher = picomatch(absolutePatterns || [], { dot: true })
+    this.#matcher = picomatch(absolutePatterns || [], { dot: true, posixSlashes: true })
   }
 
   /**
    * Check if a path matches the patterns
    */
   match(filePath: string) {
-    filePath = filePath.replace(/\\/g, '/')
-    if (filePath.startsWith(this.#rootDirectory)) {
-      filePath = filePath.slice(this.#rootDirectory.length).replace(/^\//, '')
-    }
-
-    return this.#matcher(filePath)
+    return this.#matcher(resolve(filePath))
   }
 }