fix: normalize path on windows

.gitattributes

@@ -1,2 +1,2 @@
-crates/jsshaker/tests/fixtures/** linguist-vendored
-crates/jsshaker/tests/snapshots/** linguist-generated
+crates/jsshaker/tests/fixtures/** linguist-vendored text eol=lf
+crates/jsshaker/tests/snapshots/** linguist-generated text eol=lf

.github/workflows/test.yml

@@ -11,7 +11,10 @@ env:
 
 jobs:
   snapshot:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
     - name: Setup Rust

crates/jsshaker/src/vfs.rs

@@ -59,6 +59,9 @@ impl Vfs for StdFs {
 pub struct SingleFileFs(pub String);
 
 impl SingleFileFs {
+  #[cfg(windows)]
+  pub const ENTRY_PATH: &'static str = "\\entry.js";
+  #[cfg(not(windows))]
   pub const ENTRY_PATH: &'static str = "/entry.js";
 }
 

packages/rollup-plugin/index.ts

@@ -1,6 +1,7 @@
 import { OutputChunk, Plugin } from "rollup";
 import { Options as JsShakerOptions, shakeMultiModule } from "jsshaker";
 import { createFilter, FilterPattern } from "unplugin-utils";
+import { normalize } from "node:path";
 
 export interface Options {
   preset?: "safest" | "recommended" | "smallest" | "disabled";
@@ -63,7 +64,7 @@ export default function rollupPluginJsShaker(
           [entryFileName]: entrySource,
         };
         for (const [fileName, module] of Object.entries(bundle)) {
-          sources[fileName] = module.code;
+          sources[normalize(fileName)] = module.code;
         }
 
         const startTime = Date.now();
@@ -79,31 +80,26 @@ export default function rollupPluginJsShaker(
 
         delete shaken.output[entryFileName];
         const maxFileNameLength = Math.max(
-          ...Object.keys(shaken.output).map((n) => n.length),
+          ...Object.keys(bundle).map((n) => n.length),
         );
         let totalOriginalSize = 0;
         let totalShakenSize = 0;
-        for (const [fileName, chunk] of Object.entries(shaken.output)) {
-          const module = bundle[fileName];
-          if (module && module.type === "chunk") {
-            const percentage = (
-              (chunk.code.length / module.code.length) *
-              100
-            ).toFixed(2);
-            this.info(
-              `- ${fileName.padEnd(maxFileNameLength)}  ${percentage}% (${module.code.length} -> ${chunk.code.length} bytes)`,
-            );
-            totalOriginalSize += module.code.length;
-            totalShakenSize += chunk.code.length;
-            module.code = chunk.code;
-            // if (chunk.sourceMapJson) {
-            //   module.map = JSON.parse(chunk.sourceMapJson);
-            // }
-          } else {
-            throw new Error(
-              `JsShaker Vite plugin expected to find module ${fileName} in the bundle.`,
-            );
-          }
+        for (const [fileName, module] of Object.entries(bundle)) {
+          const chunk = shaken.output[normalize(fileName)];
+          if (!chunk) continue;
+          const percentage = (
+            (chunk.code.length / module.code.length) *
+            100
+          ).toFixed(2);
+          this.info(
+            `- ${fileName.padEnd(maxFileNameLength)}  ${percentage}% (${module.code.length} -> ${chunk.code.length} bytes)`,
+          );
+          totalOriginalSize += module.code.length;
+          totalShakenSize += chunk.code.length;
+          module.code = chunk.code;
+          // if (chunk.sourceMapJson) {
+          //   module.map = JSON.parse(chunk.sourceMapJson);
+          // }
         }
 
         const totalPercentage = (

packages/rollup-plugin/package.json

@@ -27,6 +27,7 @@
     "jsshaker": "workspace:*"
   },
   "devDependencies": {
+    "@types/node": "^25.0.0",
     "rollup": "^4.53.5",
     "tsdown": "^0.18.1",
     "unplugin-utils": "^0.3.1"

packages/rollup-plugin/tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "types": ["node"]
+  }
+}