fix(gen-rollup-conf): fix globbing issues on Windows (#107)

Windows separators interfere with escaping. For this reason they decided
to use POSIX separators everywhere (they work on Windows by the way). We
don't use escaping at the moment so it's fine to just replace all
escapes (aka Windows separators) by POSIX separators.

src/module/generate-rollup-configuration/index.ts

@@ -10,8 +10,8 @@ import postcssPlugin from "rollup-plugin-postcss";
 import stripPlugin from "@rollup/plugin-strip";
 import typescriptPlugin from "rollup-plugin-typescript2";
 import { generateHeader } from "../header";
-import { join, resolve } from "path";
-import { sync as globby } from "globby";
+import { join, resolve, sep } from "path";
+import { sync as rawGlobby } from "globby";
 import { terser as terserPlugin } from "rollup-plugin-terser";
 import {
   config as chaiConfig,
@@ -29,6 +29,17 @@ const VIS_DEBUG = ["1", "true", "y", "yes"].includes(
   process.env["VIS_DEBUG"] || "false"
 );
 
+/**
+ * Simple glob with workaround for non-posix paths.
+ *
+ * @param pattern - Single glob pattern.
+ *
+ * @returns Globbed paths.
+ */
+function glob(pattern: string): ReturnType<typeof rawGlobby> {
+  return rawGlobby(sep === "\\" ? pattern.replace(/\\/g, "/") : pattern);
+}
+
 export interface GRCOptions {
   /**
    * Where to look for files when inlining assets into CSS.
@@ -400,7 +411,7 @@ export function generateRollupConfiguration(
     "standalone"
   ].map((name): string => {
     const filenameGlob = `entry-${name.toLowerCase()}.{js,ts}`;
-    const files = globby(resolve(entryPoint, filenameGlob));
+    const files = glob(resolve(entryPoint, filenameGlob));
 
     validate((expect): void => {
       expect(