base path refactor, more docs

quartz/worker.ts

@@ -1,11 +1,12 @@
 import config from "../quartz.config"
+import { FilePath, ServerSlug } from "./path"
 import { createFileParser, createProcessor } from "./processors/parse"
 
 const transformers = config.plugins.transformers
 const processor = createProcessor(transformers)
 
 // only called from worker thread
-export async function parseFiles(baseDir: string, fps: string[], allSlugs: string[], verbose: boolean) {
+export async function parseFiles(baseDir: string, fps: FilePath[], allSlugs: ServerSlug[], verbose: boolean) {
   const parse = createFileParser(transformers, baseDir, fps, allSlugs, verbose)
   return parse(processor)
 }