fix: webpack config exclude statement to system agnostic (#6857)

src/packages/excalidraw/webpack.dev.config.js

@@ -2,8 +2,8 @@ const path = require("path");
 const webpack = require("webpack");
 const autoprefixer = require("autoprefixer");
 const { parseEnvVariables } = require("./env");
-
 const outputDir = process.env.EXAMPLE === "true" ? "example/public" : "dist";
+
 module.exports = {
   mode: "development",
   devtool: false,
@@ -17,7 +17,6 @@ module.exports = {
     filename: "[name].js",
     chunkFilename: "excalidraw-assets-dev/[name]-[contenthash].js",
     assetModuleFilename: "excalidraw-assets-dev/[name][ext]",
-
     publicPath: "",
   },
   resolve: {
@@ -45,7 +44,7 @@ module.exports = {
       {
         test: /\.(ts|tsx|js|jsx|mjs)$/,
         exclude:
-          /node_modules\/(?!(browser-fs-access|canvas-roundrect-polyfill))/,
+          /node_modules[\\/](?!(browser-fs-access|canvas-roundrect-polyfill))/,
         use: [
           {
             loader: "import-meta-loader",

src/packages/excalidraw/webpack.prod.config.js

@@ -1,10 +1,10 @@
 const path = require("path");
+const webpack = require("webpack");
+const autoprefixer = require("autoprefixer");
+const { parseEnvVariables } = require("./env");
 const TerserPlugin = require("terser-webpack-plugin");
 const BundleAnalyzerPlugin =
   require("webpack-bundle-analyzer").BundleAnalyzerPlugin;
-const autoprefixer = require("autoprefixer");
-const webpack = require("webpack");
-const { parseEnvVariables } = require("./env");
 
 module.exports = {
   mode: "production",
@@ -47,8 +47,7 @@ module.exports = {
       {
         test: /\.(ts|tsx|js|jsx|mjs)$/,
         exclude:
-          /node_modules\/(?!(browser-fs-access|canvas-roundrect-polyfill))/,
-
+          /node_modules[\\/](?!(browser-fs-access|canvas-roundrect-polyfill))/,
         use: [
           {
             loader: "import-meta-loader",