diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 80cfdec..ecaf49b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,11 +5,12 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         node-version: [12.x]
+        os: [windows-latest, ubuntu-latest]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/scripts/tools/copyPackageSet.ts b/scripts/tools/copyPackageSet.ts
index bdd6a30..cb4af1c 100644
--- a/scripts/tools/copyPackageSet.ts
+++ b/scripts/tools/copyPackageSet.ts
@@ -11,9 +11,9 @@ export const copyPackageSet = async (): Promise<void> => {
   const libDir = "lib";
   const publishPackageJson = path.join(libDir, "package.json");
   pkg.private = undefined;
-  pkg.main = path.relative(libDir, pkg.main);
-  pkg.module = path.relative(libDir, pkg.module);
-  pkg.types = path.relative(libDir, pkg.types);
+  pkg.main = path.posix.relative(libDir, pkg.main);
+  pkg.module = path.posix.relative(libDir, pkg.module);
+  pkg.types = path.posix.relative(libDir, pkg.types);
   pkg.directories = undefined;
   pkg.files = undefined;
   fs.writeFileSync(publishPackageJson, JSON.stringify(pkg, null, 2), {
diff --git a/src/Utils.ts b/src/Utils.ts
index 803366c..e45da48 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -1,9 +1,20 @@
-import { normalize } from "path";
-
 export const generateKey = (kind: string, name: string): string => {
   return `${kind}:${name}`;
 };
 
 export const split = (p: string, delimiter: string): string[] => {
-  return normalize(p).split(delimiter);
+  const array = [];
+  for (const seg of p.split(delimiter)) {
+    switch (seg) {
+      case ".":
+        break;
+      case "..":
+        array.pop();
+        break;
+      default:
+        array.push(seg);
+        break;
+    }
+  }
+  return array;
 };