make path and globbing more platform invariant

quartz/glob.ts

@@ -0,0 +1,18 @@
+import path from "path";
+import { FilePath } from "./path";
+import { globby } from "globby";
+
+export function toPosixPath(fp: string): string {
+  return fp.split(path.sep).join("/")
+}
+
+export async function glob(pattern: string, cwd: string, ignorePatterns: string[]): Promise<FilePath[]> {
+  const fps = (
+    await globby(pattern, {
+      cwd,
+      ignore: ignorePatterns,
+      gitignore: true,
+    })
+  ).map(toPosixPath)
+  return fps as FilePath[]
+}