fix: support windows

Author: vnphanquang

.changeset/small-clouds-speak.md

@@ -0,0 +1,5 @@
+---
+'phosphor-icons-tailwindcss': patch
+---
+
+switch to `path/posix` implementation to support Windows

src/plugin.js

@@ -1,4 +1,5 @@
 import { readFileSync, existsSync } from 'fs';
+import { join } from 'path/posix';
 
 import { icons } from '@phosphor-icons/core';
 import { resolve } from 'import-meta-resolve';
@@ -53,7 +54,11 @@ export default createPlugin.withOptions(
 					if (ICON_SET.has(name) && VARIANTS.includes(weight)) {
 						const fileUrl = new URL(
 							resolve(
-								`@phosphor-icons/core/assets/${weight}/${name}${weight === 'regular' ? '' : `-${weight}`}.svg`,
+								join(
+									'@phosphor-icons/core/assets',
+									weight,
+									`${name}${weight === 'regular' ? '' : `-${weight}`}.svg`,
+								),
 								import.meta.url,
 							),
 						);

tests/plugin.test.ts

@@ -1,4 +1,4 @@
-import path from 'path';
+import path from 'path/posix';
 
 import { compile } from '@tailwindcss/node';
 import postcss from 'postcss';